Wine won't open any programs
The real problem was that I had removed the Z: drive which pointed to my root directory. After adding the Z: drive back using winecfg, I was able to run Windows programs from any location again.




I finally got it fixed. I just deleted the .wine folder, ran winecfg again, and everything started working.

rm -rf ~/.wine
winecfg


Sometimes after trying this solution, I still have this problem. I have found that moving the program to inside the ~/.wine/drive_c folder fixes this.