I ran into a problem last year when printing large file sizes with PrintTool and QTR. The print queue would start and then get a "filter failed" error.
These prints were 32x40 or 40x50 at 360 ppi from 8x10 drum scans. I first ran into this problem when making smaller test prints with letting PrintTool downsample to 8x10-16x20 at full resolution. I temporarily solved that problem with the smaller test prints by first downsampling to 8x10 at 720ppi in Photoshop and then printing through PrintTool. Then, I was able to make the 32x40ish prints at 360 ppi just fine. Now I'm making 40x60 prints with someone and we are consistently getting the "filter failed" error on two different computers (both running Mojave). We still had the same problem with the smaller test prints of the full resolution files but resizing to 8x10 at 720 fixed that. It is just making the big prints that are the problem. I don't think it can be a files size issue because these are about 500MB and I just printed an 800MB file without a problem last week (however it was a P9000, and not a 9900 or 9880).
Any ideas?
Richard Boutwell