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VB EXE Run time error

Posted on 2004-09-27
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Last Modified: 2012-06-22
Hi there

I have a huge problem using VB5.

I am busy with a fairly large project. It has about 15 forms, 15 modules and a class module in the main app, as well as a timer.dll which I downloaded from the internet, and two activex.exe's which I wrote myself.

The one activex exe handles all communications with the comport and the other handles all database related issues.

I am writing in VB5, running on win2000.

The problem is quite strange. when I run the project in VB's design environment, it runs perfectly every time, and it has run perfectly every time for weeks. However, when I try to run a compiled version (on my own PC or others) it keeps failing with the error: Run time error -2147418107 (80010005) - Automation Error.

The strange thing is that it is not consistent. It fails about 8 or 9 times out of 10, but not always at the same place. I am pretty sure that its not my activex exes, because after the main app has crashed, they still appear to be running. It actually seems like the problem is when they label controls are being loaded on the forms.

The reason I suspect this is because sometimes it gives me the above error, but the the exe doesn't terminate. It then half loads up the form without the labels.

I thought that the problem was maybe with the PC, so I spent the whole weekend copying the code and pasting it to a new project on a different PC. Then I rebuilt all the forms and set their properties, but it still crashes all the time.

This is very frustrating. Does anyone know what is wrong?

PS, when I run a setup program on other PC's, I get the error: access is denied shdocvw.dll

Don't know if this has anything to do with it though because the compiled version won't even run on my PC.

Thank you

John Mc Murray
South Africa




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Question by:JSMCM
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Expert Comment

by:abith
ID: 12159877
hi

instead of using the package and deployment wizard.  trt of useing any other setup pakage and deployment wizard.  use software like setup generator.  becaseu in the setup generator you have to add the file manual.  

and i still i think this won't solve your problem.

Regards
Abith .K
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by:JSMCM
ID: 12160765
Hi Guys.

Thanks, but I got some info on the internet for this problem. It is documented on Microsoft's site. When you have a timer in an application, and within that timer you call an out of process component, the timer ends up causing this error because the first call needs to first be released before the timer can call it again.

Microsofts work around is to use flags (Don't you just wish that instead of a work around they'd put a working, fixed copy of the controls on their site?)

Anyways, its working now. Very glad, 3 months of work has just been saved.

Here is the MS link.

http://support.microsoft.com/default.aspx?scid=kb;en-us;176399

John
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Expert Comment

by:Mike Tomlinson
ID: 12161418
>> Don't you just wish that instead of a work around they'd put a working, fixed copy of the controls on their site?

That is not a problem with the control, it is a problem in the way the control is used by the user.

Another alternative to flags, is to disable the timer upon entry, do your code and then enable the timer again:

    Private Sub Timer1_Timer()
        Timer1.Enabled = False
   
        ' Do something...
   
        Timer1.Enabled = True
   End Sub

~IM
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