Installed QknP 2009 09/27; first copied/validated 2008 data & it converted w/o any problems. On 09/29 my online AMEX balance did not agree with the register sorted by cleared status -- again validated w/o error. Finally found the problem -- the opening, reconciled $0 balance had been CHANGED to a reconciled payment of $164.75.
Flickering & refusal to print are minor problems compared with the program changing the data. Understand from a forum poster that this is a known problem! R2 did not fix this.