Hello,
could you get a tail for the last 2000 lines of your current errorlog SID.log and pipe it into a new file ? This should give us a hint what might fill up the log.
You can compress this output and attach it, that would make it easier, to attach file the max size is 1 MB.
Regards
Stefan
PS: Could you also post the full version string for your ASE ? (select @@sbssav).