Florian, many thanks for the improvements that work so well for my large collection that I maintain on a 64-bit machine. Earlier version always aborted when I made a large number of updates while trying to work in my complete collection at one time, to the point I had to work in about 15 smaller groups of files. Now I can edit for hours and have no issues. I don't - yet - use the saved database feature, but the version works for all my current needs. I've used several earlier versions but can now get much more work done in a single session. Check your PayPal account! Cheers!
The current version is 2.89a - perhaps this one is even greater...