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Sep 17th, 2006
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Weird GAC error when Trying to Install

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Hi Folks,

I have a VB 2005 app (2.0 Framework) that I've published out to one of our fileservers in our company, so users can download/install and run it. It published fine, but when I go to install it on another PC (which I'm logged into with Admin rights), I get this error:
SYSTEM UPDATE REQUIRED <-- in Title Bar
Unable to install or run the application. The application requires that assembly CrystalDecisions.CrystalReports.Engine Version 10.2.3600.0 be installed in the Global Assembly Cache (GAC) first.
Two strange things here: one, the CR file is already in the GAC, and two, I'm not using CR in the app. All the CR files are in the References list which must be a default because I didn't set it.

Oh, one other strange thing: If I remove the Unused References in my app, the CR references go away. I thought that would be the fix. BUT, when I try to run the App in the IDE now that I've removed Unused References, VB2005 crashes and doesn't give the reason!


It just says that something strange happened and I might lose my work. Oy.

Any ideas?

Thanks in Advance.
Last edited by paulie; Sep 17th, 2006 at 1:59 am.
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Sep 17th, 2006
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Re: Weird GAC error when Trying to Install

To add to this question, this is even weirder: If I remote into the target PC (using Remote Desktop) and look in the C:\windows\assembly folder, the Crystal entries are NOT there in the GAC. BUT, if I map to that PC's C drive and navigate to the GAC, the Crystal entries show up! What's up with that???

Click to Expand / Collapse  Quote originally posted by paulie ...
Hi Folks,

I have a VB 2005 app (2.0 Framework) that I've published out to one of our fileservers in our company, so users can download/install and run it. It published fine, but when I go to install it on another PC (which I'm logged into with Admin rights), I get this error:
SYSTEM UPDATE REQUIRED <-- in Title Bar
Unable to install or run the application. The application requires that assembly CrystalDecisions.CrystalReports.Engine Version 10.2.3600.0 be installed in the Global Assembly Cache (GAC) first.
Two strange things here: one, the CR file is already in the GAC, and two, I'm not using CR in the app. All the CR files are in the References list which must be a default because I didn't set it.

Oh, one other strange thing: If I remove the Unused References in my app, the CR references go away. I thought that would be the fix. BUT, when I try to run the App in the IDE now that I've removed Unused References, VB2005 crashes and doesn't give the reason!


It just says that something strange happened and I might lose my work. Oy.

Any ideas?

Thanks in Advance.
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since Sep 2006

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