Are you running the latest release of Electron for windows (I guess we are on win here correct me if I am wrong)
It is here
https://github.com/Electron-Coin2014/Electron-ELT/releases/tag/0.8.9.4aI compiled it and tested it on various win machines, virtual and normal, at least 10 different machines............. I take building good wallets seriously
While reindexing if something got corrupt is a solution......... I wonder how this happened in the first place...
I have spent a lot of time making sure the clients released are error free..... please let me know how it goes......
If still having issues please post error log file from rpc console ......... you can put it here or on the electron coin thread and I may have a better idea what happened.
Sorry you are having problems.
offtopic sort of.......... the univ mol client is same from initial release, (I think one release several months ago was done with just a checkpoint)
Should be tight although the developer of that coin built all the release versions not me.
I use a wallet I built myself but if it worked before on that computer for you I wonder what happened.......
My advice is back up your wallets on something other than that particular pc......
Let us know how this works out and we will help you !!
EDIT 1 If you are going to use the repair wallet command and it does not work our lead dev bluedragon747 built the python wallet repair program for the blake family, and it works well......... it is on the blake coin thread..........
Another option that may be labor intensive if you have a lot of addresses is to use
listaddressgroupings
from rpc console and then dump the private key for each, then import into a new wallet......................
that is a guaranteed way to repair a wallet but can take a half hour of copy and pasting them if you used many addresses... ect.....
just trying to offer a few helpful hints here not step on the Univ Mol dev's toes...........
Can't remember for sure if I have seen this error at some point. May be related to the leveldb version.
Have you try re-indexing the blocks?
Command prompt: Go to where your electron-qt.exe file is located. Instead of typing electron-qt.exe to launch the client, type "electron-qt.exe -reindex" and it will launch the client and reindex all the blocks.
Alternatively, in windows, right click the client icon. Click copy. Then click paste shortcut. Then right click the shortcut icon. Click properties. in the target field, add -reindex to the end of the commands.
If reindex doesn't work, we can try the 0.8.9.1 version of electron-qt to see if that solves the problem.