When trying to change the lookback period and the session template in one run on the HE 05-10 chart, I got the following great error message:

Any ideas? Was unable to reproduce so far, however the error caused NT to crash ("NT has detected a problem and needs to shut down.") - not very pleasant during trading...
Plus: After the above error occured, the HE 05-10 chart was "X"ed out with the big red X and the "NT has detected..." message reappeared every time when pointing the mouse cursor at the broken chart...
Regards
ninjna
ps: Happened on beta11, we havent switched to 12/13 yet on that system since b11 has been the most stable version so far.

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