I did some serious searching but couldn't find an answer. Is command line program called from AutoIt script. The resultant exe seems to run OK from command line except when called from the script it produces a Micro$ft error and closes. Is the "-1" an error? If so what does it mean? -- View this message in context: http://gcc.1065356.n8.nabble.com/Compiler-result-Process-returned-1-0xFFFFFFFF-tp1369157.html Sent from the gcc - Help mailing list archive at Nabble.com.