Recently an application that I have been using for years has stopped working, displaying the error message
"A debugger has been found running in your system...."
I found this solution (bellow quoted) on the Wine website, which seems very confusing to me. The application works now, but it shows that it is working on 32-bit
In order to get the 32-bit Metatrader 5 installed on a 64-bit Linux/wine system do the following:

1. create new 32-bit only wine-prefix:
WINEPREFIX="$HOME/.wine32" WINEARCH=win32 wine wineboot
2. execute mt5setup.exe-installer:
WINEPREFIX=~/.wine32 wine mt5setup.exe
3. run the termin.exe programm:
      WINEPREFIX=~/.wine32 wine terminal.exe
Just out of curiosity I would like to know why this happened and to know if there is a way to get back to working with 64 bits.
Does anyone know anything?