I recently got GTA4 and newly installed LCPDFR, and have had issues attempting to run it. I ran the diagnostic and everything was alright with the exception of the log file report.
I tried checking if there was anything set to read-only, which there was, I proceeded to remove read-only from the entire GTAIV root folder and ran the diagnostic again and had issues with 'advancedhook.dll'
ASUS FX504ge Signature Edition
Intel core i5-8300h CPU @ 2.30GHz
7.86 gbs of RAM available
64-bit