I have also seen TC hang when pressing Log, however I was not in a position to investigate or replicate it.
Hi HKJ,
I am also experiencing this problem with V2.88. I wanted to investigate further before reporting, but now the subject has come up.
My experiences so far:
- When starting logging TC will freeze. (readout in the Current Values tab works fine)
- The problem is only when the Setup Menu is open.
- When looking in debug mode, after pressing "Log", there is a askmode? or updatemodechange, with a series of refreshes of the Setup Menu.
Halfway trough these refreshes TC freezes.
- With all :updatemodechange: removed from the Setup Menu, the problem is gone (But the menu is no longer updated

)
- With all :updatemodechange: removed, and #updateModeChange added, the problem is the same.
- The problem seems to be only with GPIB controlled devices. (Ethernet and COM controlled devices seems unaffected)
- I tried long delay timeouts (#readingDelay 10, #modeChangeDelay 10). Did not improve matters.
- When switching back to V2.77 all is fine.
I experienced the problem with the Keithley 199 and the Agilent 3458A drivers, using latest Java JRE, on Win7 and Win10.
Hope this helps....
regards, Gertjan.