I finally after two years of fighting problems with my react pro I went and bought a new computer, the problems I was having was doing the download, everytime I downloaded mine and went to exit the program, I would get a run time error when it went to back up the file. I have been in contact with a rep from one of the repair centers and he told me it was my Home PC not the software or the DC. Yeah Right. I advised him that I had installed the software on 3 different makes of computers and had the very same issue. Still not solved, so if you wanna buy a spare DC.... LOL
Also. until recently I have never had a reason to second guess my computer until I was looking through my logs and noticed a 4 hour dive in 8' of water, yes a 4 hour dive. I was in the pool working with my instructor training students when this happened. everything appeared normal on the display but read funky after the download.
I loved the computer and it has suited my diving well until I had cataract surgery and could no longer see the display without straining my eyes.
Good luck in getting a fix, I have been waiting 2 years