It built. I can still submit a bug report if you want to investigate the bug anyway; I have a backup from when the error was occurring.
GDI objects peaked just shy of 11k when it built successfully. So I still need to keep the per-process quota above its default, but whatever error was causing it to fail was also causing it to generate 2.8-3.5k extra GDI objects.
I don't know how helpful this will be for anyone who is having a similar issue, but here are the things I tried that didn't work along with what finally seemed to fix it. First, the things I tried that didn't fix it (most of which have fixed equally mysterious problems in the past):
- Opened the VI that was compiling mid-build and forced it to compile by control-clicking the Run button.
- Rebuilt the class that the .ctl file that was compiling mid-build is associated with, by copying/pasting the block diagram of each member VI into a fresh VI, adding them to a fresh class, and connecting the new class back into the class hierarchy in place of the old one, which I removed. (A lot of the problems I run into in LabVIEW seem to stem from file corruption, and are fixed by doing this sort of thing.)
- Created a new build specification from scratch.
- Created a new project file from scratch (which necessitated creating another new build specification as well).
- Simplified the implementation of the last thing I added before it stopped building properly. This reduced the number of GDI objects generated while building from 14.5k to 13.8k, but it still compiled a couple things mid-build, caused the screen to flicker a lot and then crashed.
What finally fixed it: I attempted a build, expecting it to fail but just checking to see if it was still compiling the same two files mid-build. (It wasn't, actually; rather than compiling the VI, it compiled the .ctl of the private data of the class that VI is a member of. So two .ctls instead of one .ctl and a .vi.) LabVIEW complained that it had had to resolve naming conflicts, so I opened up the build spec and found that it had lost about two-thirds of the destinations I had created and forgotten which destinations almost all the files were destined for. So I fixed all this, saved, quit, opened the project again, and it had forgotten some of the destinations again. Lather, rinse, repeat until I opened it three times in a row and it hadn't forgotten anything.
And then it built successfully--no mid-build compiles, no screen flickering.
