Web Console Fails to start

[Slanes69]

Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: BC30138: Unable to create temp file in path 'C:\WINDOWS\TEMP\': System Error &H80070005&


I get this message whenever I start lansweeper's web console. windows\temp exists so it's not that.

I've restarted iis but to no effect.

Any suggestions? LS was working fine two days ago.

[Hemoco]

1) Delete all files in this folder
2) make sure "everyone" has full access to the folder (ntfs permissions)