I discovered the 'upload' workaround also
After some looking around, I found that also. Sopied the pictures to my pc and use the assistant now to do the upload and creates the thumdnails.
Synology would do better to make this clear somewhere in the admin pannel of the nas and in the firmware...
I have a DS109 nas with about 110000 pictures on it. With the Photostation 3 ( from the 9xx firware) It had generated nice thumbnails. After upgrading to photostation 4 new pictures didnt seem to get a thumbnail and a convert process was running all the time.
Thinking something was wrong with...