After upgrading or installing a new version of Windows you may find the ability to view local Help Files has been removed by Microsoft as part of the upgrade process. This affects a lot of software that uses the standard HLP format (including CPO). However, this functionality can be restored quite easily by following the numbered steps below.
We are currently working on upgrading the help system so that it is available in the newer help file format and also on this website. Please subscribe to our newsletter (green button on the home page) to receive an update when we release this.
Steps to re-enable viewing of help files
Search for all versions of salflibc.dll on your disk drives and delete them, then copy the latest version to your working cpo directory.
The latest version can be downloaded as a zip file here.
If you are having problems running your older version of CPO on, say, Windows XP or Windows Vista or 64-bit systems
If you have a (very old) dongle plugged into a parallel printer port, this is a dk12 dongle, otherwise for the usb dongles it is dk3. download the correct drivers for your os and install them. reboot and the cpo should then run. If this fails to work contact cpo.
If you have an ATI FirePro video card, or other advanced card, it is possible to disable advanced features of the card as follows:
Open a command prompt (cmd), run MSCONFIG, find the tab labelled BOOT, check the box saying "base video".
Reboot the computer and see if CPO runs without crashing. If this fails to work contact CPO.
If a CPO program crashes when you try to open a data file 2 possible causes are:
Unfortunately we cannot create clean exits for these because they are outside our control.
The easiest form of help is in the online /Help/index/step by step help/. Here is a copy of part of it.
Start by reducing the size of that Help page and putting it where it can be seen while you run the program.
Click on File and then on Open for running only.
Double click on 2d_data (assuming you are using cpo2d) and then on test2d01.dat.
After the messages click on Run, watch the program run, then click on OK.
Click on Zoom or Contours or View, and in each case experiment with all the options.
Click on Close.
Now experiment with changing some of the parameters of the model:
Click on File and then on Open data builder file.
Double click on /2d_data/test2d01.dat.
Click on File and then on SaveAs (data builder file).
Enter a name of your choice and then save.
Click on Databuilder and experiment with the options, running the program to see the effect of the changes.
Finally click on Close data builder, then Exit.