Peakto beta (1.9.1-7026) has some problems while indexing images.
I've two local folders, one LRC catalog, and on LR cloud Catalog, and the program crashes every time while it get's to about 58% of indexing.
I deleted everything several times, and the crashes still happened. It's something that maybe has to be looked upon. After a lot of restarts, (since I do know that I'm using a beta, and I suspected that it just got tired or something), I think it finished and now everything seems cool.
Last time, I just did not add my LR cloud catalog, so maybe it is that one the one causing the crashes.