New Post: Product Export Failed

Thank for for your hint, David.
I have only Settings, Templates, Export, Import under Utilities in my installation.
Under BO>Admin I selected "Fix errors" and "Do Store Validation". I got the following result:

Product Images: ERRORS: 99 FIX: 99
Product Docs: ERRORS: 57 FIX: 57
Product Languages: Products Checked based on Merchant Culture of de-CH : 604
Category Languages: Categories Checked based on Merchant Culture of de-CH : 22

After that I tried to export all products. Same result:

A critical error has occurred. The given path's format is not supported.