Note i am having the same issue as well.
I am running windows 7 64 bit and using the 8.7.2 fastcoin wallet. after importing_the_bootstrap_files_into_user_gt.css;appdata>roaming>fastcoin
i get the same issues it launches, but doesn't do anything just stuck on rescanning loading block index for hours.
and yes alot of processing power goes into it.
any help would be appreciated.
Thank you