SGPro can't connect to my FLI camera anymore!!!

I finally cleared up and I wanted to take the remaining data for my Heart Nebula image. Set everything up. Checked everything (so I though during the day) and when I wanted to start imaging...

... SGPro couldn't connect to my FLI camera anymore!!!

I clicked the connect button, it would turn to green and then after a while would disconnect again. In the SGPro logs I could see:

[12/17/2016 7:08:41 PM] [DEBUG] [Main Thread] Connecting camera in main thread...
[12/17/2016 7:08:41 PM] [DEBUG] [Main Thread] Connecting FLI camera...
[12/17/2016 7:08:41 PM] [DEBUG] [Main Thread] Querying for FLI USB cameras...
[12/17/2016 7:08:41 PM] [DEBUG] [Main Thread] FLI Camera Name: MicroLine ML16070(HW: 256; FW: 292)
[12/17/2016 7:08:41 PM] [DEBUG] [Main Thread] FLI Library Version: Software Development Library for Windows 1.104
[12/17/2016 7:08:41 PM] [DEBUG] [Main Thread] FLI CCD Dimensions: 4954x3300
[12/17/2016 7:08:41 PM] [DEBUG] [Main Thread] FLI Visible CCD Dimensions: 4864x3232
[12/17/2016 7:08:41 PM] [DEBUG] [Main Thread] FLI Pixel Size: 7.39999995857943E-06x7.39999995857943E-06
[12/17/2016 7:08:41 PM] [DEBUG] [Main Thread] FLI Camera Mode: 0
[12/17/2016 7:08:41 PM] [DEBUG] [Main Thread] FLI Avaialble Camera Modes: 
[12/17/2016 7:08:41 PM] [DEBUG] [Main Thread] - 0: 11 MHz
[12/17/2016 7:08:41 PM] [DEBUG] [Main Thread] - 1: 4MHz
[12/17/2016 7:08:41 PM] [DEBUG] [TEC Thread] SGM_CHANGE_COOLER_TEMP message received...
[12/17/2016 7:08:41 PM] [DEBUG] [TEC Thread] TEC Change: Starting...
[12/17/2016 7:08:41 PM] [DEBUG] [TEC Thread] TEC Change: After camera connect change, waiting ~5 seconds...
[12/17/2016 7:08:46 PM] [DEBUG] [TEC Thread] TEC Change: Attempting to turn the camera cooler on...
[12/17/2016 7:08:46 PM] [DEBUG] [Main Thread] Turning camera cooler on...
[12/17/2016 7:08:46 PM] [DEBUG] [Main Thread] Turning camera cooler on...
[12/17/2016 7:08:47 PM] [DEBUG] [Equipment Connectivity Thread] SGPro thinks the camera is connected, but it's not, syncing UI...
[12/17/2016 7:08:47 PM] [DEBUG] [Equipment Connectivity Thread] Adding sequence level notification: External disconnect of camera detected...
[12/17/2016 7:08:47 PM] [DEBUG] [TEC Thread] SGM_CHANGE_COOLER_TEMP complete...
[12/17/2016 7:09:12 PM] [DEBUG] [Main Thread] Turning camera cooler off...
[12/17/2016 7:09:12 PM] [DEBUG] [Main Thread] Disconnecting FLI camera...
[12/17/2016 7:09:13 PM] [DEBUG] [Main Thread] Turning camera cooler off...

Tried various things (restart SGPro, restart computer, different cable...) with no effect. The weird thing was that other apps (FLI Grab, TSX) could connect and use the camera.

I posted on the SGPro mailing list and it seems as if this is a regression in one of the latest builds. I tried 2.5.2.8 and 2.5.2.6 without luck. Only when reverted back to 2.5.2.3 (quite old!) it that worked. Phew!