Newsgroups: comp.windows.ms.programmer Path: utzoo!utgpu!watserv1!watmath!hyper.hyper.com!bonneau From: bonneau@hyper.hyper.com (Paul Bonneau) Subject: Re: What causes an application execution error? Message-ID: <1991Mar5.152231.12377@hyper.hyper.com> Reply-To: bonneau@hyper.UUCP (Paul Bonneau,,) Organization: HyperCube Inc. References: <1991Mar4.190749.607@maytag.waterloo.edu> Distribution: na Date: Tue, 5 Mar 1991 15:22:31 GMT In article <1991Mar4.190749.607@maytag.waterloo.edu> giguere@csg.waterloo.edu (Eric Giguere) writes: >I've got an application that Windows doesn't want to run two or more times >simultaneously. As soon as I start one copy, trying to start a second >copy always gives me an "Application Execution Error" saying that I >can't run multiple copies. Yet I've compiled with multiple data segments. >And it's not even calling the WinMain procedure, so checking hPrevInstance >doesn't do anything.... Any ideas as to what else could be wrong here? > Make sure you are compiling with the medium memory model switch (/AM for Microsoft C). You are only allowed one instance of a large memory model (ie. fixed data segment) application. cheers - Paul Bonneau.