CreateProcessWithLogonW output fix (VB.NET)

I have a sample using CreateProcessWithLogonW (attached). The problems I am having are: 1. it hangs when trying to read output 2. I need to be able to capture both stderr and stdout - and it seems that stderr comes on the stdout handle? 3. it needs to be able to hide the application it starts (don't know if this works - needs to be verified) 4. I need to be able to read output from an x86 process when this starter process is running as x64 (this probably works - needs to be verified) I am also attaching a project that writes to both stdout and stderr that could be used for testing. I guess there are something wrong with the pinvoke definitions.