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>Only when setting up with L2 data (I tried this with satellite and L3 >data); when left on autoupdate, the data will "lose it's source" >after running for a few hours. The L2 data will stop updating, and >if I go to the data selector, the menus will look as if I have no >data below the $RAD or $SAT level. It I exit and then bring it back >up, it's fine - and sees the current data. Stonie, I believe this is a memory leak issue in the rsl library. I found one that will lose 3200 bytes every time a sweep is encountered with no radials. On a test file yesterday, I observed 12,800 byes lost every time the file was read. That may be a problem over a loop that runs for a while, but can't say how long it would be before OSX started to have trouble. At any rate, I'm fixing that up now. Steve Chiswell Unidata User Support Ticket Details =================== Ticket ID: VTP-245146 Department: Support GEMPAK Priority: Normal Status: Closed