"aspnet_compiler.exe" exited with code 1.

I use Web Deployment Project to make one assembly of the asp project. But when trying to build the wdp I had this error (although the project comiled and run fine):

"aspnet_compiler.exe" exited with code 1.

And finally I got the problem. The reason was a missing </form> closing tag.

See: REGEX to find missing closing tag