Hi Guys, Toolkit's had this issue for a while (here, anyway) and I've just upgraded to 1.11.2 and it's the same. Here's a sample scenario that's 100% guaranteed to crash every time: [LIST=1] [*]Run Toolkit [*]Scan the network [*]Double-click to select an existing Neo 8 from either the "Units on Network" "Units in Database". [*]Select the Key Functions tab. [*]Left-click once on Key 6 "short press" input box. [*]Type "T". The drop-down list opens with Toggle selected. [*]Left-click again to confirm your choice. The drop-down list closes. So far so good. [*]Now click ANY other key/function box as if to repeat the above process. [*]Down she goes... [/LIST] I'm running Toolkit under Win7, x86. A few things to note: [LIST] [*]This fault isn't evident if I do same on a 503xN - it's only my Neos. (I have mostly 503x's and Neos here & haven't bothered to try and reproduce it on my AUX's and other misc input units) [*]If you type say "R" the drop-down offers "Recall2". If you wheel or mouse to "Recall1" and select that, the fault doesn't occur - it's only if you select the first choice offered [U]without moving the mouse or arrows to a different selection[/U]. [*]If you don't change the current function if won't crash. e.g., current function is "Idle". Type "I", press return (or click) and you're OK. [*]Whilst my "key 6" scenario is 100% reproducible, I can achieve the same result with other keys and other values. It's not EVERY selection, but only takes a couple of choices before I can kill it. [/LIST] :-) G.