I cant remember PropertyWebPart, probably it was removed some versions ago. I guess you have an upgraded site?
If you go into admin mode and select "Edit Custom Property Types" on tab Config, do you see any entry with Class name 'EPiServer.WebParts.Core.PropertyWebPart'. If you do try to remove it.
I am not sure if you will be able to delete it from UI, if not you could try delete it from tblPropertyDefinitionType (dont do it directly on production server though....;-))
That was what I thought.
I couldn't remove it from the UI, will try the database, thanks
Here's the sql for removal
USE YourDB; delete from tblPropertyDefinitionType where TypeName = 'EPiServer.WebParts.Core.PropertyWebPart';
I notised that we get a lot of warnings in our logs that looks like this:
EPiServer.DataAbstraction.PropertyDefinitionType.get_DefinitionType: Could not load type 'EPiServer.WebParts.Core.PropertyWebPart', falling back to base type instead
When I looked in the database I didn't find any contenttypes that use this property so it must be inside EPiServer in some way.
Anyone know how to get rid of these warnings?