Most likely cause of that is probably an old version of the wallet that is not on the right chain. What wallet version are you using? The latest version is v1.0.0.3-10001. you can check this by clicking in your wallet on the help tab than "about numus" tab.
http://preview.ibb.co/e9bF7R/vi.pngHas updated to the latest version and the status stays the same
To fix it, after upgrade, you have to go in the console and write "repairwallet"