Errors on empty home #142

I was trying to start a bash shell using an empty HOME folder (for tests unrelated to resh), and that results in a bunch of resh errors.

When I run export HOME=$(mktemp -d), that results in

bash: /tmp/tmp.QyTXwj6Qdu/.resh/postcollect_last_run_out.txt: File or directory not found.
head: '/tmp/tmp.QyTXwj6Qdu/.resh/postcollect_last_run_out.txt' can't be opened for reading: File or directory not found.
resh-postcollect ERROR: 

then when I start a new bash with this manipulated HOME, I get these errors for each command:

__bp_precmd_invoke_cmd: Command not found. 
__bp_interactive_mode: Command not found. 

Is it possible to get rid of these errors when HOME is empty?