Solved

Illegal Operation...

Posted on 1998-09-01
2
223 Views
Last Modified: 2010-04-30
I recently created a VB 6.0/Access 7.0 application that uses the Crystal Reports 4.6 control.  When I ran the executable, it performed as expected.  However, after I exited the app and the form unloaded, I received an Illegal Operation error caused by either the Crystal Reports control or dll (I cannot remember the extension).  

Please note that when I ran the setup, it could not copy the file MSVCRT20.DLL due to an access violation.  I am not sure what the function of this DLL is, though it appears to be used for version 2.0 of Crystal Reports and I would not think it would cause this error.

Any thoughts would be greatly appreciated.

Thank you,
David
0
Comment
Question by:dfhaines
2 Comments
 
LVL 9

Accepted Solution

by:
cymbolic earned 30 total points
ID: 1432273
The MSVCRTxx.dll's are support dlls to Microsoft Visual C.  I believe the rt stands for run time.  These modules will cause problems on your system if they are not the proper release leve, since they are used by so many different developed products, all created using VC++.  I have had problems in the past with installation of VB programs that had a setup created on a system that had had VC++ also installed on it, since the install picked up a back versioned MSVC...dll, causing the 95 system to hack.  Usually you get an access violation becuase these modules are almost always in use by some system routine developed with MS VC++.  A good install will restart your machine to be able to install over a system dll that is always in use.  I'm sure though that the msvc dll is a culprit.  Check out your versions and compare them to some other machine that works!
0
 
LVL 4

Expert Comment

by:mcix
ID: 1432274
I had a problem very similar to this a while back...

As it turns out, either MSVCRT20.DLL is not in the App Path or (WINNT)Windows/System path.

OR

The version of MSVCRT20.DLL is out of date.  

I have not tried Crystal with VB6 as yet, but hopefully this points you in a direction.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
How to create a duplicate finder Application 9 115
message box in access 4 41
How to set the sa password in a vb6 code for sql connection 9 38
Child Form in front 4 39
I’ve seen a number of people looking for examples of how to access web services from VB6.  I’ve been using a test harness I built in VB6 (using many resources I found online) that I use for small projects to work out how to communicate with web serv…
Article by: Martin
Here are a few simple, working, games that you can use as-is or as the basis for your own games. Tic-Tac-Toe This is one of the simplest of all games.   The game allows for a choice of who goes first and keeps track of the number of wins for…
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…

867 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

23 Experts available now in Live!

Get 1:1 Help Now