my ($x, $y, $scale, $angle) = $group->get_simple_transform; #to my ($x, $y, $scale, $angle) = $group->get_transform; #### *** glibc detected *** /usr/bin/perl: double free or corruption (out): 0x08157b18 *** ======= Backtrace: ========= /lib/libc.so.6[0xb7dc0c23] etc etc