Hung when compiling Programming Software Development by abrou …"." -I"c:\Qt\4.3.3\include\ActiveQt" -I"release" -I"." -I"… QAxBase::exception Access Violation Reading Location Programming Software Development by Eagletalon … to our ERP (Syspro) through e.net COM objects using ActiveQt and in specific QAxObject... The problem is this: QAxObject inherits… Re: Hung when compiling Programming Software Development by dubeyprateek How long did you wait after the hung? Does it hang your machine? What is the .NET framework you are using? It takes longer if you have installed new version of framework sometimes as long as five minutes, subsequent builds will be faster. Re: Hung when compiling Programming Software Development by abrou It hangs my machine. I just left it for 10 minutes, and it compiled (well, kind of, there was an error), but I'm not sure why the sudden change in compilation speed. I don't think anything was recently installed, but this is computer is used by many people, so I will need to find that out. You are right, it is a bit faster the second time. … Re: Hung when compiling Programming Software Development by dubeyprateek You may not need to lear about .Net framework as such for your project. It is a underline layer which helps managed code to run your system(It is not the only thing it does). Sometime Windows update can install new framework for you. Re: Hung when compiling Programming Software Development by abrou Thank you very much for your help! Apparently it was just patience needed.... Re: QAxBase::exception Access Violation Reading Location Programming Software Development by Eagletalon Hi everyone... I have found the cause... In my constructer of the structs I called a function "disableMetaObject" which did not allow any of the Qt signals to be sent... and then my QAxObject wanted to load a void QVariant into a QString so in short... dont call "disableMetaObject" when working with signals and catching …