My reporting application has been having issues with dlls in its bin folder. From time to time the application fails to respond and when I debug it for the first time, it generates a compilation error as follows:
"
Compiler Error Message: CS0006: Metadata file 'c:\winnt\microsoft.net\framework\v1.1.4322\tempor ary asp.net files\rock_reports\7e08136e\dd740787\assembly\dl2\ a2a8b8f0\86d3c5af_3ef4c401\chart3d.dll' could not be found

Source Error:
[No relevant source lines]
"
After a re-build, that error message disappears and application runs again.
Could anyone offer some advice?

Yubo

I discovered that the cause of this issue actually stems from the fact that I have <impersonate=true\> tag in the Web.config. The server requires this in the configuration to issue database query while my development machine does not require it so it works fine all the time but this tag on server screwed up the app. from time to time. Do you know why certain machine needs this configuration and how I could get rid of it? Thanks.
Yubo

   You need impersonate = true if you want to use Windos authentication. It is not a problem on your dev PC probably because you have the DB and Web server on the same PC. This only becomes and issue when the DB and Web server are on separate servers as they should be.
   As for the original issue, I don't believe that the impersonate tag is causing the problem. I had a similar problem when using some 3rd party controls. The fix was to disable the indexing service on the machine that is running the app.