We have implemented a change that may resolve this issue. Please download the latest from
http://www.kinook.com/Download/VisBuildProEval.exe to try it.
Also try launching all VisBuildPro.exe/VisBuildCmd.exe instances with the
/mta flag.
And something that apparently helped one other user was to add a Run Script (VBScript) step like this to the project:
Application.Options.RunProgramOutputWaitTimeout = 1000
Application.Options.RunProgramInputWaitTimeout = 1000
Application.Options.EnableEventErrorLogging = False