yeah..I went from 100 to 200 but it still did not work :) now I went to 500.... and, viola...it works... so, if you have a lot of stuff , you may need a much higher number in there to get your thumbs back. I thought it was just 100 per folder, but it must be the total number of thumbnails within the runtime.

Humankind has not woven the web of life. We are but one thread within it.
Whatever we do to the web, we do to ourselves. All things are bound together.
All things connect......Chief Seattle, 1854