Jan

Maybe try this: https://support.microsoft.com/de-de/help/18539/windows-7-change-default-programs Also remove firefox from the list default programms for maff-files

Hello Katja, sorry for my late response. You have to delete the files manually. The reason is that maff-viewer just calls your browser and then terminates itself. There is no simple way to detect if these files are used at the moment.

It seem that maff files are still assigned to firefox. Please assign maff files to maff-viewer, not to firefox. maff-viewer is not a firefox-plugin.

Help with the following Error

Help with the following Error

Help with the following Error

here done with https://sourceforge.net/projects/maff-viewer/files/testcases/