Adblock Plus

Hello,
I'm using ADBP with IE11 in a corporate environment (with proxy).
Currently, when I try to update ADBP, I get an error message :
"There was an error while checking for an update of ADblock Plus. The error text was: ?1?".
Does anyone know about this ? Is there a fix or workaround ?
Thanks
-Pierre

if you are behind a corporate proxy, it seems ...normal
see also about other software (search for "proxy" in the page)
https://productforums.google.com/forum/ ... 9JVaaEhV2A