Not a lot to go on there.... What are the compiler versions? Have you tried running in debugger? You really need to establish what call in your code lead to the crash and check out the data that is being used on the call as a first line of attack.
Thanks for looking at this. More info:
1. Compiler 17.1
2. Win7 64bit
3. Even before it starting in the debugger it gives this error. So I assumed it is in the QWin startup but have really no clue.
Many years ago, in the DVF5.0D Steve Lionel answered the question for someone else as:
This error occurs if you try to use the QuickWin libraries from a
Console application. My guess is that you used Developer Studio to
create a "Win32 Console Application" and then added the QuickWin
libraries. The correct method is to create a "QuickWin or Standard
Graphics" project (and then you'll get the QuickWin libraries
The software was created in DVF6.0 about 18 years ago. All I can think is something went wrong with the QuickWin part of the project.
I also found that long-ago answer, but I think this case is different. Monday I'll see if I can identify the particular place in the code that gives this error to see if I can get a hint. If I recall from the distant past, an "internal error" can also result from trying to create a QuickWin window that is "too large". Can you tell us what line of code is being executed when this error occurs?
I found what causes the error but why it suddenly does so now I do not know. In
Logical(4) FUNCTION INITIALSETTINGS ()
I had this line:
Res = DISPLAYCURSOR($GCURSORON)
Commenting it out resolved the issue.
DISPLAYCURSOR isn't the sort of thing you should do in INITIALSETTINGS - that's for controlling the appearance of the frame window. DISPLAYCURSOR affects the active window, which there isn't one during INITIALSETTINGS.