Arupld32 heeft fout ...

when i just installed avast it worked perfect.
But suddenly I started getting messages like Bdnagent and/or Arupld32 has caused error in unknown
And emails are scannend anymore.
Can i reinstall avast, or uninstall it?
When i try to remove it through the configure window i get an errror message too !

These two mentioned files are not from avast. Bdnagent seems to be a BitDefender module, Arupld32 is some kind of connection monitor.
Are you sure the problem is related to avast? When exactly are you getting the error?

exactly when i send a message (only with a virus) and the small ikon in the bottom right next to the clock changes