Featuresets dissappeared (and therefor my features don't display)

[Risjaar 0]

Hi, Today i found myself with a new challenge: my featureset was suddenly missing. On my homepage it didn't show my featureset, but the text 'No feature posts matched this pages criteria' instead. So i immediatly tried to search for my featureset in the settingspage, but it was gone. The features on the otherhand are still there, but they are now not connected anymore to a catagory. And even stranger: i can't save any new featureset catagories in 'feature sets'. I'm puzzled. Did I do something wrong?

[Kate 3]

Hi Richard - Have you made any modifications? Added any new plugins?