[exim] ACL problem in 4.64

Hi all
I need help with the following
After upgrading to 4.64 i get

"temporarily rejected after DATA: failed to expand ACL string "${if or
{{eq {$sender_address_domain}{hb.se}} {>={$message_size}{100k}}}
{0}{1}}": integer expected but "" found inside "or{...}" condition"

I have this in SA ACL as:

warn  message   = X-Spam-Score: $spam_score ($spam_bar)
        condition = ${if or {{eq {$sender_address_domain}{hb.se}}
{>={$message_size}{100k}}} {0}{1}}
        spam      = nobody:true
        hosts     = ! +relay_from_hosts

This worked fine with 4.63

Any ideas?
Regards
Nicklas Hardman
Univ. College of Boras
Sweden