As discussed here, if a ruin have a block with a Hyphen/Dash in its name, it error in latest.log
Obelisk_Sandstone.tml rule6

Trying to parseruin an Obelisk with scribble in it log

Yes. Hyphen/Dash is a reserved character as far as Ruins is concerned, using it in a blockname is not supported behaviour.

This used to be minecraft behaviour too, however they fixed it at some point in time

could it be fixed by using colon/other symbol instead of hyphen to split meta/rotation?

Sure, it would only mean breaking most Ruins templates. To support something that has literally never come up in all these years. I'll see if i can hack something together that catches this special case without invalidating the scheme.

maybe use a config file for special blockname?

That might be a working but dumb solution. I'll try something cute first.

Aaaand done. Download the current zip from my github.io project and check if the issue is fixed.
a308a19

Seems to work nicely :D