"Browse All Versions" crashes every time
I am using Pages 5.5.2 with Yosemite 10.10.2. Whenever I REVERT/BROWSE ALL VERSIONS and I select an old version I get a hanging beach ball and have to Force Quit. It wasn't always like this. It changed when Pages changed Browse All Versions so there were up and down arrows in addition to the bars at the far right. I am selecting from the bars, but the arrows are unresponsive or very slow. I am writing a book so access to the old versions is important to me and it had been a very useful feature but is unusable now much to my dismay. I should add that I have a LOT of old versions. I save every couple of minutes...but even so it didn't use to be be a problem. I ran Disk Utilities on my hard drive and it was fine. The Pages file is in iCloud Drive.
Anybody else have this problem? Any ideas about how to fix it?
Thanks.
iMac (21.5-inch Late 2009), OS X Mavericks (10.9)