When Veil team will bother itself to make a wallet that could work? My 1.1.0.1 worked couple of weeks and now reports the following error. "MinGW runtime Assertion: Assertion failed! Expression: pindexWalk-->pprev" Looks like I need to download the fresh snapshot of 18 GB to get it work 
5h 26m left to download... to see if this will work around.
5h 26m left to download... to see if this will work around.Apologies about that. Using a snapshot is the right solution if you get that error. One way to reduce the chances of that error is to make sure to shut down the wallet itself before shutting down/restarting the computer.
I am doing it all the time when using the wallet but now starting to suspect that sometimes it doesn't fully close itself and relevant processes remain running in background. Need to check this suspicion. BTW, after downloading the current snapshot and replacing the content of four folders (sure you know what I'm talking about) wallet is in working state again.
After the upgrade of the wallet to the latest version i had exactly the same problem, however, i had the wallet installed in a machine (Win 10 - i5U - 8GB Ram - SSD) along with other POS wallets.
Every time the problem appeared i solved it by deleting the appropriate folders and placing the latest snapshot in their place.
After a while i decided to move the wallet to a machine with much better specs (i actually use it atm to mine Veil with CPU - Ryzen 9 - 16 GB - m2. SSD), no other wallets are running in this current machine and so far the wallet is running smoothly, no crashes, no errors, receiving stakes normally.
i dunno if the above info is helpful but i hope it made the situation a bit clearer for you.