F1PerfView says performance files are corrupted

[treadrubber]

I'm trying to load the .pa* peformance files into F1PerfView, to analyze the telemetry, but it says they are corrupted ("Error reading file: the data seems to be corrupt"). I've saved them ingame, with GP2Lap running. I've also tried to save the perf files without GP2lap running, but still got the same result.

F1PerfView v. 1.27.0.2 (Nov 2018)
GP2Lap v. 1.15
DosBox 0.74-3

[treadrubber]

Found the reason: F1PerfView by default is set for LFS, so it must be changed from the view > options menu to Primary Game - GP2.