Custom sidebar stopped working, tried to upgrade -wouldn't upgrade then broke more

first time asking for support. For Lofts1.com: I have my assistant adding 447 custom sidebars (as the new programmers I just hired have not gotten to a solution for this and won't for a while). She got 300 or so Custom Sidebars up and working. Then it stopped working. Looked and saw needed upgrading. Upgrade failed. Tried to fix by renaming Custom Sidebars directory and installing new version. Site seems to work fine BUT looks like I broke the functionality. How do I fix it?