All mongrels crashing

Hi,

I got a problem running a rails app on swiftiply (0.6.1.1)/mongrel
(1.1.4).
It’s running on a Debian 4.0 Etch, rails 1.2.6, ruby 1.8.

Mostly its running fine, but sometimes ALL mongrels die with the
following messages in mongrel.log

/var/lib/gems/1.8/gems/mongrel-1.1.4/lib/mongrel/rails.rb:54:in
escape': can't convert nil into String (TypeError) from /var/lib/gems/1.8/gems/mongrel-1.1.4/lib/mongrel/configurator.rb:303:injoin’
from
/var/lib/gems/1.8/gems/mongrel-1.1.4/lib/mongrel/configurator.rb:303:in
join' from /var/lib/gems/1.8/gems/mongrel-1.1.4/lib/mongrel/configurator.rb:303:ineach’
from
/var/lib/gems/1.8/gems/mongrel-1.1.4/lib/mongrel/configurator.rb:303:in
join' from /var/lib/gems/1.8/gems/swiftiply-0.6.1.1/bin/mongrel_rails:145:inrun’
from
/var/lib/gems/1.8/gems/mongrel-1.1.4/lib/mongrel/command.rb:212:in run' from /var/lib/gems/1.8/gems/swiftiply-0.6.1.1/bin/mongrel_rails:252 from /var/lib/gems/1.8/bin/mongrel_rails:18:inload’
from /var/lib/gems/1.8/bin/mongrel_rails:18

I can not reproduce this error. But think it has to do with
“Mongrel::Const::PATH_INFO” not set.
Would be fine if some knows how to fix this.

Many thanks,
marc