Updating acrobat reader gives a message;

Updating acrobat reader gives a message;
Error 1402 couldnt open key;
HKEY_Local_machine32\software\microsoft\windows\Nt\current version\Image file execution options\Acro Ext.exe

Verify access.....

The same message appears when trying to remove this program

Its Acrobat reader XI version 11.0.11 thats currently installed

What going on?