@Markiyan Hirnyk I did now, and it works... I will have to read up about differences between the two modes, didn't recognize there was such a difference...

Thanks a lot!

@pagan Yes, I was using 2D math mode (I discovered it works in 1D mode, see below). When I seperate the statements I get an error for the third statement ('with(MyLib);'), namely "Did not recognize syntax". When I execute the last statement a second time however, the module loads, but doesn't work properly (most of the functions return errors). Obviously my module is only compatible with 1D math mode.

Thanks a lot!

@Markiyan Hirnyk Yes, I did, but I didn't see this problem anywhere. I think its very specific and might be more about how Maple interprets code (line by line vs block) then about modules, but I'm not sure.