Running on Windows I got the follow:
Program C:\XDNA\xdna-qt.exe
File: main.cpp, Line 4235
Expression: setBlockIndexCandidates.count(pindex) == 0
After that I tried the Linux wallet. I compiled on Ubuntu 16, but the error appears again:
CDB : Error -30974, can't open database
xdna in ProcessMessages()
xdna-qt: main.cpp:4241: void CheckBlockIndex(): Assertion `setBlockIndexCandidates.count(pindex) == 0' failed.
Can somebody help me how to solve the problem?