[Therion] Problems with Execution

Suddenly I have a Problem with getting drawings from Pockettopo to Therion. If I have made a Therion-Export-File on my PDA and I want to load it in Therion-Map-Editor I get the Error like below. If I say OK the XVI-File will produced anyway! Then I have tried to import that File to the Editor and I get the error below. I have done this procedure very often. But now it is a new Computer. OS is Windows 7 professionell, therion is 5.3.13 Has anyone an idea? Markus