Given the viscosity on G+, I think it’s fairly unlikely that it’s a motor current issue. I run 200 mm/min even on much more viscous resins. If the stepper were skipping due to high load, there’d be a pretty noticeable sound that would be hard to ignore.
An image name parsing problem would manifest itself as the host software being unable to detect the current number of slices, but from the screenshot, it seems to be detecting the expected number of slices.
The log entries are undated, so it’s hard to tell whether they occurred during the print, but the log is small enough that it doesn’t seem to have occurred often enough to last through the duration of the print.
One thing that I do notice, however, is that you are using a layer thickness of 0.1mm (100 microns), using the baseline exposure time for 37 microns, and actually having 44 microns XY.
With G+, this may result in underexposure. Underexposure would not cause the build plate to lift and lower to the exact same location, but it could cause the print to not form above layer 50 and result in a remnant similar to the picture provided.
Because the build plate is only moving up a very small net amount per print, it can be difficult to tell whether the build plate is rising on any single layer. After 100 layers, however, it should be noticeably higher.
Regardless of the movement issues, I think you will need to either reduce your layer thickness (the recommended settings are for approximately equal XY and Z and you’ll need to re-slice) or increase your exposure times, probably by about double if you want to keep the current model.