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compiler initialization failed

Posted on 2013-06-02
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Last Modified: 2013-06-06
compiler initialization failed unexpectedly: Project already has a reference to assembly App_Code. A second reference to 'C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\cs\5f5d3ae7\828f7e4d\assembly\dl3\1af52ae7\ed7e340a_5e5cce01\App_Code.DLL' cannot be added.      


How do I clear this error?      I'm using Visual Studio 2008
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Question by:1752
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13 Comments
 
LVL 11

Accepted Solution

by:
MajorBigDeal earned 2000 total points
ID: 39214273
I received similar errors when I tried to manually edit some of the configuration files.  The way I resolved the problem was:

1. Make a good backup.
 
2. Do a find looking inside all files for part of the string causing the problem (in this case, ed7e340a_5e5cce01\App_Code.DLL.

3. Manually edit the file to remove all references (not just one).

4. Recompile and re-add any needed references using the normal process.
0
 

Author Comment

by:1752
ID: 39214301
Great.

So your saying use vs to rind in my solution "ed7e340a_5e5cce01\App_Code.DLL"

I must admit I have never scene anything like thi is on my system.

Regards
1752
0
 

Author Comment

by:1752
ID: 39214684
I'm now getting "Object reference not set to an instance of an object" with nothing else when I publish.

The solution Builds      and Rebuilds OK but cannot publish!

Any ideas?

1752
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LVL 11

Expert Comment

by:MajorBigDeal
ID: 39217434
OK, I think we are making progress.  The new error could be from a number of different causes.  The one I would try first is to delete the bin folder and rebuild.  

http://stackoverflow.com/questions/2289129/publishing-asp-net-website-give-object-reference-not-set-to-an-instance-of-an-o

If that doesn't work, please explain details of how you are publishing, are you publish to the local server as a test or to a remote server.  

Make sure you have frequent back-ups so that you can get back to a previous state after trying something that makes it worse.
0
 

Author Comment

by:1752
ID: 39219179
Hello,

Well backup done, I deleted the Bin Folder and rebuilt the site and as expected 39 errors.

The bin directroy had in it a number of very important dll's used by the site.

What should I do now?

1752
0
 
LVL 11

Expert Comment

by:MajorBigDeal
ID: 39219248
Correct the errors and replace the necessary DLLs.
0
 

Author Comment

by:1752
ID: 39219275
I will look into the errors I know the MS ajax dll is one big contestor.

Thanks

1752
0
 
LVL 11

Expert Comment

by:MajorBigDeal
ID: 39220459
Cool, hopefully your project will be stable after that.
0
 

Author Comment

by:1752
ID: 39220643
Thank you
0
 
LVL 11

Expert Comment

by:MajorBigDeal
ID: 39220821
If you have trouble re-adding the references let me know.
0
 

Author Comment

by:1752
ID: 39221751
Hello,

Guess what it now publishes, MS Ajax added then gateway control and bingo. I suspect it could have been the gateway DLL, the gateway company has not got back to me yet.

So give it a coupls of days and I will accept your solution.

Thank you so much.

1752
0
 
LVL 11

Expert Comment

by:MajorBigDeal
ID: 39222106
Great - glad you got it working!
0
 

Author Closing Comment

by:1752
ID: 39225647
Hello,

Guess what it now publishes, MS Ajax added then gateway control and bingo. I suspect it could have been the gateway DLL, the gateway company has not got back to me yet.


Thank you so much.

1752
0

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