I heard from a friend the other day who has the free version of Construct that when they were deleting events the Total number of events was not going down. So if they have 99 events, delete 10 and then add 2 more, they would still hit the 100 event cap. That seems to be the same problem OP is having.
I'm at work so I can't download the free version to test, but could there be a bug in that version? I actually thought this was a bug that was fixed in the free version a while ago, so maybe it crept back in? Or it didn't and my memory is just bad boolean2013-03-28 13:45:43