solved error = "A debugger has been found running in your system...."

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
  1. 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?