delete C:\Users\Undland\AppData\Roaming\Talkcoin folder and don't forget to keep safe
C:\Users\Undland\AppData\Roaming\Talkcoin\wallet.dat
Not working. Old QT, which i last used is not working too. When i push "Send", it returns me Runtime error. In other PC same error! I do not use my QT 1-2 months, perhaps old wallet.dat now is not supported?
How i can contact to devs?at first you need to unlock your wallet, you can not send any message with secure wallet

Ok. Devs just keeps a silence.

Anyone who help me to solve this problem will receive from me 300TAC.
Sorry I would like to help but I didn't have Windows to help you. Did every others Altcoin Qt-clients work too ? These Runtime errors are really bitchy. If you confirm that error is only happens with Talkcoin-Qt client but not others clients, it would be very strange. No users have ever reported about this.
With this test. Go to the help window, debug window-console, put on the command line ""dumpprivkey " " without quotes or parentheses.
If everything goes right you back your private key. Well, now go to the Roaming folder and rename the folder talkcoin by talkcoin1, don't touch nothing more.
now do a clean installation with the latest version, Now go back to the debug window-console and on the command line you write importprivkey [label] [rescan=true]
where you put the private key that has given you before and in "label" if you put a name to the address.
Now you must synchronize everything correctly, leave although this does not seem to work.
If this does not solve the problem, try to reinstall Microsoft Frontend 4.5 and C++ 2012 Redistributable 11.0.50727