Writer hangs when converting HTML to ODT

i am using debian wheezy and latest version of libreoffice. when i load a html file into libreoffice writer the whole system hangs and i have to do a reboot. this has happened to a number of documents.

i also get the error

ERROR:
invalidaccess
OFFENDING COMMAND:
copy
STACK:
--nostringval--
--nostringval--
--nostringval--
10
-mark-
-mark-
-mark-

any suggestions.

thanx

jim s.