Ok, i re-checked 1.8.0 and the issue with the wrong format of cells seems to be gone. (I initially tested it with a file i opened with 1.6.3 and i guess i saved it with the wrong formats, so it looked also weird when i opened it in 1.8.0.) So i decided to upload 1.8.0 to my repository. (Should be ready in a few minutes, just update your application manager then.) Please keep in mind that the new version is not 100% stable also (as i said above, it crashed if you open the filechooser a second time in one session), please report other bugs you discover here. Maybe i can spent some time to fix the filechooser-issue in the next days, but dont expext to much work from me in the next weeks.