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I'm using MD to debug through a console application and on attempting to step through the debugger I get the following error in a modal popup:
System.ArgumentNullException: Argument cannot be null.
Parameter name: thread
at Mono.Debugger.Soft.StepEventRequest..ctor (Mono.Debugger.Soft.VirtualMachine vm, Mono.Debugger.Soft.ThreadMirror thread) [0x00000] in <filename unknown>:0
at Mono.Debugger.Soft.VirtualMachine.CreateStepRequest (Mono.Debugger.Soft.ThreadMirror thread) [0x00000] in <filename unknown>:0
at Mono.Debugging.Soft.SoftDebuggerSession.<OnStepLine>m__F (System.Object ) [0x00000] in <filename unknown>:0
"Monodevelop will now close". Yep it will.
Does this bug still happen with the new version of Mono on Lion?
I was not able to replicate it.
I believe this has been fixed as no-one can reproduce this. If the issue is still there could you give more detailed information on what mono and monodevelop version you have installed so we can try to reproduce it. Also, it'd help if you could check on the latest versions of MonoDevelop and mono if you are on old versions.