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Download the Free Trial Version of CoStat 6.4

Thank you for choosing to try CoStat. (This is version 6.400.)

Installation Notes:

  • Technical Support Is Free before and after you buy a license. If you can't figure something out or don't like something, please don't give up. Contact technical support. Maybe we can help.
  • Slightly Crippled - Unless you buy a license and use Help : Register to register this program, this trial version of CoStat will cover up one line of data on the screen with "CoStat (not registered)" and will suppress printing crucial statistics (it prints "not registered" instead). The line of data in the spreadsheet covered up by the red letters is still accessible (move the cursor to one of the cells and look in the data entry field above the spreadsheet). Otherwise, this is the complete version of CoStat. We are sorry about the crippling. We felt we had to do something to encourage people to buy a license and not just use the free trial versions forever. CoHort Software is a small company of people trying to make a living writing, selling, and supporting this software. We don't have other jobs or government grants. We can't afford to just give CoStat away. If you like CoStat, please buy a license.

Install CoStat:

  • For Windows (32 bit)
    1. If you have an older version of CoStat or CoPlot, uninstall it with
      Start : All Programs : CoHort : Uninstall.
      (Don't worry, your files and your preferences won't be deleted.)
      Or, use Start : Settings (on older computers) : Control Panel : Add/Remove Programs
      and uninstall CoHort, CoStat, and/or CoPlot if they are listed.
    2. For Windows 2000, NT, XP, Vista, 7, and 8 download costat6400Win.exe (21,628,009 bytes) into a temporary directory. (Trouble downloading? Try this mirror site.)
      For Windows 95, 98, and ME, download the older costat6311Win.exe into a temporary directory.
    3. In Windows Explorer (also known as "My Computer"), double click on costat6400Win.exe and follow the instructions on the screen.
    4. To run CoStat, click on Start : All Programs : CoHort : CoStat.
  • For Mac OS X
    1. Use System Preferences : System : Software Update to see if there is a more recent version of Java available to download and install.
    2. Download costat6400Mac.zip (3,014,314 bytes) to your desktop.
      (Trouble downloading? Try this mirror site.)
    3. Drag costat6400Mac.zip on to the Applications folder.
    4. Double click on costat6400Mac.zip in the Applications folder.
      That should create a CoHort folder.
    5. Drag costat6400Mac.zip from the Applications folder to Trash.
    6. To run CoStat, go to Applications / CoHort / cohort6, and double click on costat (it appears with no extension).
      We hope to repackage CoStat for Mac soon so that this is easier and doesn't leave a terminal window open.
  • For any other operating system (e.g., Linux, Unix, Windows 64 bit)
    1. Download and install the latest version of Java by going to www.java.com and clicking on Get It Now.
    2. Download costat6400.zip (2,917,673 bytes).
      (Trouble downloading? Try this mirror site.)
    3. Unzip that file into a directory called cohort6. For example, in Linux:
      cd /usr/local/bin
      unzip costat6400.zip -d cohort6
    4. For Linux and Unix, you need to make the csh script files exectuable. For example,
      cd cohort6
      chmod +x costat
      chmod +x cotext
    5. To run the program, use the costat or cotext script files in the cohort6 directory (you may need to modify them).


Common Download Problems

  • If your browser changes the file's name before saving it, change the name back to the name specified above.
  • If the download freezes at 99% for more than a minute, try cancelling it and starting the download again. Usually, it will go super fast the second time and get to 100%. If that doesn't work, try downloading with a different browser (if you have one) or on a different computer. If that doesn't work, please send an email to CoHortSoftware at gmail.com.


Common Problems Running CoStat

  • If you get an error message about msvcr71.dll not being found, please:
    1. Right click on msvcr71.dll and save it to
      • C:\Windows\System if you have Windows 95/98/Me
      • C:\WINNT\System32 if you have Windows NT/2000
      • C:\Windows\System32 if you have Windows XP, Vista, 7, 8
        If you use a 64-bit version of Windows, you should also place msvcr71.dll in C:\Windows\SysWOW64\
    2. Reboot your computer.
    3. Click on Start : All Programs : CoHort : CoStat to run CoStat.
    4. If the problem still occurs, try the following:
      • Open Windows Start menu and select "Run...".
      • Type CMD and press Enter (or if you use Windows ME, type COMMAND)).
      • Type regsvr32 msvcr71.dll and press Enter.
    5. Click on Start : All Programs : CoHort : CoStat to run CoStat.

  • When you exit CoPlot or CoStat, you get a warning like "Warning: Default charset MS932 not supported; using ISO-8859-1 instead."
    This problem can occur on some computers where the default language is not English. The solution is:
    1. Right-click (Apple users: use shift-click) on charsets.jar
    2. Choose Save Target As (or "Save link as" on some browsers).
    3. In the file dialog that pops up:
      • Set Save As Type to be All Files.
      • Make sure the file gets saved with the name charsets.jar. If your browser changed the file name (for example, to charsets.zip), change the name back to charsets.jar.
      • Choose to save the file in your cohort6 directory in the sub-directory called "jre/lib/"
        (on Windows, this is often c:\Program Files\cohort6\jre\lib;
        on Mac OS X, this is often (Macintosh HD)/Applications/CoHort/cohort6/jre/lib;
        on Linux and UNIX, this is often /usr/local/bin/cohort6/jre/lib).
    4. If the file gets upzipped, something went wrong. Try to follow the steps above again, but with slight changes so that the file gets saved as one file.
    The next time you run CoPlot or CoStat, the file will be detected by Java and the problem should go away.


Common Problems with Installing and Running CoStat from the Command Line

OS/2, Linux, or Unix says something like: "Bad command or file name" immediately after you type costat.
The script file isn't being found. Check the directory listing to make sure the CoHort files are there. Did you remember to change to the cohort directory (in Linux and Unix, cd /usr/local/bin/cohort6) before running the program?
OS/2, Linux, or Unix says something like: "Bad command or file name: java" right after the script file tries to run java.
The Java program isn't being found. Edit the script file so that the reference to 'java' includes the name of the directory where the java program file is located.
Java says: "Can't find class com.cohort.CoStat"
Did you remember to change to the cohort directory (in Linux and Unix, cd /usr/local/bin/cohort6) before running the program?
There are text buttons, not graphics icon buttons, on the toolbar just below the menu titles.
Make sure that the icon's .gif files are indeed in the cohort6 directory: for example, check to see that OpenButton.gif is present. If it isn't, try to find out where it is (in Linux and Unix, use "find / -name 'OpenButton.gif'") as that may help you determine what went wrong with your installation.
Problems running CoStat from a shortcut file or a desktop icon?
Make sure the shortcut points to the correct script file (for Linux and Unix: costat) in the cohort6 directory. Also, make sure that the shortcut file makes the cohort6 directory the current directory before it runs the costat script.


What Is in the 'costat' Script/Batch Files?

Few people will need to know these details. But here they are:

If you use the command line installation method, the CoHort programs are actually run by OS/2 command files (for example, costat.cmd), Unix/Linux shell scripts (for example, costat, no extension), or Windows batch files (for example, costat.bat, if you aren't using the costat.exe file). In unusual cases (for example, non-Sun versions of Java), you may need to modify these files to get the programs to run on your computer.

Usually, the files have just one command in them. Using the Windows batch file for CoStat as an example:
java -Xmx512m -Xincgc -cp .;cohort.jar com.cohort.CoStat %1 %2 %3 %4
The syntax is slightly different in the OS/2 command files and Unix/Linux shell scripts. The components are:

runs the program via the java program. If Java isn't found when you run the script file, add the full directory name before "java".
specifies 512 MB as the maximum amount of memory to be allocated to the program. You can increase this: -Xmx1400m or -Xmx1500m is often the highest amount allowed on computers with 32 bit operating systems. But if you get an "out of memory" error message, it is more likely that something other than memory is the problem. See Memory in the CoStat manual.
turns on incremental garbage collection. Garbage collection is the system by which Java reclaims memory that was allocated but is now no longer used. Incremental garbage collection (as opposed to non-incremental) is required for CoHort programs. Also, our experience is that Java sometimes generates erroneous "out of memory" error messages when non-incremental garbage collection is used.
-cp .;cohort.jar
sets the Java classpath, which tells Java where to look for the Java class files. The cohort.jar file is a compressed file which contains all of the class files from CoHort Software. All of the other files which are distributed with CoStat (for example, .aov files) should be in the same directory as cohort.jar. In the Unix and Linux script files, the path separator is ":", not ";".
the name of the Java class to be run. This is "com.cohort.CoText" or something else in the other script files. This is case sensitive in all operating systems. Starting with CoStat 6.100, "com.cohort" is needed because all of the files in the cohort.jar file are now in a Java package called "com.cohort". So the full name of the CoStat class is "com.cohort.CoStat".
passes the first parameter (the document name) to the program.
passes the second parameter (for example, the name of a macro) to the program.
passes the third parameter (currently unused) to the program.
passes the fourth parameter (currently unused) to the program.


Optional Document Name on the Command Line

For CoStat, the extension of the datafile name on the command line tells CoStat what type of data file it is, so that CoStat can import the data. If the datafile name doesn't have an extension, .dt will be added. Supported file types (and the necessary extensions) are: ASCII (.asc), Comma separated value ASCII (.csv), columnar ASCII (.col), CoStat (DOS .dt and Java .dt), dBASE (.dbf), Epi-Info (.rec), Excel (.xls), Gauss (.fmt), Genstat (.gsh), HTM (.htm), HTML (.html), Instat (.wor), Lotus 1-2-3 (.wk3), MatLab (.mat), Microstat II (.mii), Minitab (.mtw), MSTAT (.dat), Paradox (.db), Quattro (.wq1), Quattro Pro for Windows (.qpw), Rich Text Format (Word, .rtf), S+ (.sdd), SAS PC (.tpt), Space separated ASCII text (.txt), SPSS/Win (.sav), Stata (.dta), Statistica (.sta), Systat (.syd), Tab separated ASCII text (.tab).

For example, "costat longley.dbf" will run CoStat and import data from the Longley dBASE file. See File : Open in the CoStat manual for details.


Installing and Running CoStat with a Network File Server

We no longer recommend that you use a network file server to store the CoHort programs. It leads to excessive network traffic and makes the program's start up time much longer.


Problems, Comments, Questions, or Suggestions?

We want your experience with CoStat to be a good one. If you have problems, comments, questions, or suggestions, don't hesitate to contact technical support.