Error on product tabs

After store import to 3.0.6 from 2.2.5 everything looks good except the product tabs. Instead of the product details (appears in admin) I get:

Warning: Smarty error: unable to read resource: “” in /home/grove/public_html/214/lib/smarty/Smarty.class.php on line 1095

permissions are fine, did a database repair with nothing significant showing. cleared cache. I’m at a loss. A quick check of forums has similar errors but in other parts of the site. Any ideas? Thanks!