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visual net 2005 warning about referenced assembly & Error regarding "Unable to write manifest"

Posted on 2009-04-07
Medium Priority
Last Modified: 2013-11-26
A sudden warning and error appeared today.  The warning is: warning 15 Referenced assembly 'C:\Programming\ETPRoNet\ETProBankManager\bin\ETBankManager.dll' targets a different processor than the application.      

The error is: Error 14  Unable to write manifest 'obj\Release\ETPro.exe.manifest'. Failed to create a temporary file. Temporary files folder is full or its path is incorrect. The file exists.

The real kicker is that if I load the project from my thumb drive I do NOT get any errors.  I copy the files to the machine and the warning and error appear.

Question by:vaughnwhitehead
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LVL 39

Expert Comment

ID: 24088856
and I assume you tested for enough room on your harddrive and you emptied your %temp% dir already? The file itself (the path you refer to) is editable, ie. not in use by another process?

Author Comment

ID: 24088942
The only above item I hand not checked/performed was emptying the %temp% dir.  After doing this, the error is gone but the waring  "Referenced assembly 'C:\Programming\ETPRoNet\ETProBankManager\bin\ETBankManager.dll' targets a different processor than the application" is still present. I removed the reference and then added it again, but still get the message.

LVL 39

Expert Comment

ID: 24088994
Glad the first bit went away. Sounds that you have a mixed 64 bit / 32 bit situation. Either the dll is 64 bit and your assembly is 32 bit, or the other way around. Can you check whether you (perhaps inadvertently) mixed versions?
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LVL 39

Accepted Solution

abel earned 2000 total points
ID: 24089286
Is the dll a non-.NET dll? I.e., non-managed? From this thread, I got it that that might be a reason for your trouble: http://social.msdn.microsoft.com/Forums/en-US/winformssetup/thread/d7843bc7-3034-430d-9e46-60acd14c53a6/

Author Comment

ID: 24091460
Sorry, but I could not find where the 64 vs 32 bit settings are established.


Author Closing Comment

ID: 31567587
That was it.  The target CPU for the dll was (set to any CUUP.  I changed it to x86 and the problem went away.

Thanks again - I really appreciate the help.
LVL 39

Expert Comment

ID: 24095298
> That was it.  The target CPU for the dll was set to any CUUP.
> I changed it to x86 and the problem went away.

Glad you found it. These errors can be tricky to solve sometimes if you don't know where to look.

> Sorry, but I could not find where the 64 vs 32 bit settings are established.
It wasn't that, as you have found out now, it was the dll.

Glad to have been of some help,

-- Abel --

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