Zcash wallet on Linux broken - please advise

today I wanted to send some zcash to an exchange and saw that my wallet was outdated (running gentoo linux - installed from binary). So i tried updating to the latest version. Unfortunately I kill the zcash deamon before attempting the update. Now the zcash daemon won’t start but instead crashed. I tried zcash -reindex and waited a couple of hours. Then I was able to run zcash-cli -getinfo and everything seemed fine but after some time the wallet crashed again. Now I reindex again but I think this won’t help either. I then installed the zcash4win client on a windows box and imported my wallet.dat but after syncing my balance shows zero. Please advise! Thx