Device details / Components is gone

Hello,

doing zenpack development, so I'm doing "zenpack --install" quite a lot of time mixed with "zenoss restart".

Obviously the zenpack is under development, so it has bugs.

After several "--install"s and remodel of devices, my component page has gone.

I've tried to "zenpack --remove" the affected zenpack (with zenoss restart) without much of a help.

Any thought what to check, what to do to get the device details back?

[Have checked the logs, didn't find anything suspicious, even increased zope's debug level in its conf]

Please help [not so keen on reinstalling zenoss from scratch again].

Thanks,