Forum Discussion
Altera_Forum
Honored Contributor
15 years agoHi Mumble,
I don't know. This simply sometimes happens when you start adding, removing, changing, etc. In all dev tools, not only Altera. If you kept the old project and you want to discover more (possibly to avoid the same mistake in the future...) you can compare the project files and try to find out what's the critical difference. Cris