Building an exe fails - no error message

Question

I have a simple vi I wrote and have been trying to build into an executable.  Occasionally I am successful.  (~15% of the time.)  Usually I get the following dialog box, which obviously isn't much help.  The build log is equally useless to me--under the [ERROR] section it simply says, "Code:0."
I haven't been able to figure out why it's successful sometimes and not others.  The only thing I've been able to nail down is that if I create a new build spec it will build successfully on the first attempt.  Subsequent attempts usually fail.
Any ideas?

Answer 1

After opening up my project this morning, here are a few things I did and the results:
Launch build from the project window (PW) - Success
Launch build from the PW - Success
Launch build from the PW - Success
Open folder showing the build directory
Launch build from the PW - Success
Launch build from the build properties dialog box (BPDB) - Success
Preview build in the BPDB
Launch build from the BPDB - Success
Manually delete built files from the build directory (I leave the directory there with an associated dll and the build log file.)
Launch build from the PW - Fail (Same missing error)
After that it seems to fail whenever I have a folder open to the build directory and work if the folder points to something other than the build directory.  The build looks like it goes through the entire process, creating the .exe folder and saving all the files to it.  It deletes them when the "Building application..." step fails.