#6 Small errors "convert variant" and "Required Field Missing"

[Imageman]

I have a RSS http://soft.mail.ru/export_news_all.php.
(http://feedvalidator.org/check.cgi?url=http%3A%2F%
2Fsoft.mail.ru%2Fexport_news_all.php) "Required Field
Missing. Field: enclosure -> length"

At processing a tape there is a mistake and the further
processing stops :-(

It is possible somehow continue processing (that is to
ignore small errors)?

In RSS http://www.compulenta.ru/rss.xml strange error:

"Could not convert variant of type (Null) into type (String)"