Windows 7 Minecraft 1.5 Update Crash

Minecraft crashes at about the time that it finishes updating. I can log in and start the update, but Minecraft will continue to crash upon completion of the update. I have tried to use "Force Update" but this does not remedy the issue. Attached are the crash reports that are created upon Minecraft crashing. the file "hs_err_pid984.log" was from when "Force update was used, and the other file is from then normal updating was attempted.