I'm new to SCADA systems, so my question may seem dumb, but..
I have transfered WinCC project from one PC to another, and now have some problems with WinCC action scripts (*.pas files).
The scripting runtime is installed and running, all scripts are compiled and placed in corresponding folder, but actions doesn't work.
The script is collecting every hour data from SIMATIC system, places it in temporary placeholders - WinCC internal tag's, and on a daily baisis calculates average, min and max values, placing them also in WinCC internal tag's.
Then thouse values are used to generate and print report. But instead of calculated values I get zeros. It seems that script can't collect or store data, or it can't do calculations.
That was input to my problem, and now the questions

What can be the most obvious causes, if scripts worked perfectly on one PC and doesn't work on another? (OS and WinCC versions are same)
Is it possible to get some diagnostics or debugging on scripts without modifying project?
P.S. oh, and I get also in WinCC error log something like "script execution error @ <address>" - where can I see these addresses?
Thank You in advance!