When I open a .RW2 file from my Panasonic Lumix DMC-G7 camera, I receive the warning "Image: ChannelMultipliers: Value 0.000 too small, truncated to 0.010." The resulting image has a heavy blue hue and any adjustments to the color temperature slider cause the warning to appear again.
I've attached the RW2 and the in-camera JPEG that matches. I don't know if I can attach such large files here, but if I can then they're attached to this report. If it doesn't work then I'll provide a download link instead.
The RW2 opens fine for me, channel multipliers are normal (2.535/1/1.57) and colors are like shown in the JPG. What version are you using (mine is latest CVS).
I am using the Windows installer executable that automatically appears on the Download button on the project home page which says it is 0.19.2-2.
Uh, ok, that really is way too old :(
0.19.2 was released in 2013, so it can hardly know about the G7. You do need a version from the development tree for it.
Unfortunately I cannot help you there - I exclusively use linux, so I cannot even give you a tip where to look for precompiled windows versions....
I could build for Linux all day long, but I only have a minimal toolchain for Windows. It would be nice if the maintainer would update the Windows installer.