Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

[MonsterMMORPG]

When i call LibSVM inside task this error happens after second task started.

If i call libsvm inside main thread, no error happens ever.

If i only start 1 task the error does not happen

As can be seen at the very first image the error is not related to my application or my functions. It is caused by either wrapper or the libSVM.dll itself i dont know which one.

I am using windows 8.1, x64, visual studio 2013, WPF .net 4.5.1 application, 32 gb ram memory on this computer

First here error message

Second error message

Third what works and what causes error

I really need help ty very much

[ccerhan]

I really don't know why it is not working but have you ever heard about the keyword volatile?

It might solve your problem.

[MonsterMMORPG]

@ccerhan yes thus i have programmed my application to perfectly thread safe. it is the error of libsvm. the library is not written that way seems like.

[mricherzhagen]

But libsvm is not written threadsave, so you cannot call its methods from multiple concurrent threads/tasks.

To solve this you need to start a new process.

volatile won't solve this.

I think reporting errors in screenshots like this is highly discouraged.

[MonsterMMORPG]

@mricherzhagen that is unfortunately what i am doing. copying debug folder and starting another exe. very very bad way of working.