I dont think switching to the Windows-Version is a good suggestion. By that we wont experience such bugs and so mac bugs get never fixed

Sure, it's not a good idea to switch over to windows once you've started as the bug / issue that could have been created while using the mac version of the editor will still be there, plus it's not a good idea to switch between the two editors either way.
& again... if you would be willing to send me your ved & resources via dropbox, sendspace or something, then I will more likely than not be able to figure out what's causing the issue; something to do with the editor, or human error. If you are willing to share, then pm me the link or send via email @
afrlme (at) outlook (dot) com.