Thanks for the update! I have actually been problem free for a while now when I noticed one day that I didn't need to clean all every time anymore. I think it may have been due to a change in the make file by Spark, or it might have been when I converted my PATH variable to DOS 8.3 filename structure. Either way I'm enjoying the good life with fast build times now! 
Some history from the other thread where I tinkered with this problem: