Don't bother; the 6.4.5 BOINC Manager has been designed mainly for use with CUDA apps. i.e. Nvidia GPU projects, namely SETI & GPUGRID. With GPUs in mind, the devs didn't really take CPUs into consideration. The main problem ATM is that the ETAs for WUs for CPU-only projects are completely nonsensical until a couple of WUs have actually been crunched - the BM then "learns" how long they take and it all works itself out.
Plays havoc with scheduling and stuff until it figures out the correct times. Banal example, I installed 6.4.5 on my WinDoze box, got it up and running and it D/Led 2 ABC WUs with ETAs of 50+ hrs. They only took 3 and 5 hours respectively, but the darn BM wouldn't D/L anything else until they were finished, because the scheduler thought that my box would be busy for a couple of days.
Theoretically, this should be resolved when they release ver.6.5.x......
Seejay - Proud Founder & Member of BOINC Team Allprojectstats.com