Hello Martin,
looks like your topical user has not enough rights to execute Mashzone under the C:/Program Files directory structure. What kind of os (win XP, vista, win7) do you use?
What is the behaviour like if you start MashZone as a service?
Best regards
Thomas
From the screen shot I guess you are either using vista or 7. Please refer to the release notes (a document that has been copied into your installation directory). It suggest to install to a directory different from the standard %Program_Files%
suggested by setup.