Crashes here too
I found it odd that it could go up to 998 chars without crashing, whilst the variable limit is normally maximum 949 chars. From 999 bytes on it crashes.
Yes I would love to see the variable limit removed or atleast extended, but I don't see it happening.
Well, the variables should have unlimited size, like most serious scripting languages (PHP, Perl, etc)
EDIT: He can't crash 6.14. The bug is only in 6.15-6.16