Drupal core 6.22
Inline and link Drupal objects (Linodef) 6.x-1.0-rc5
also tried this with Linodef 6.x-1.x-dev

If I inadvertently forget to insert a space after the node ref number e.g. [#1234something] instead of [#1234 something]

The node edit page bombs out with the following error though it does save the node.

Parse error: syntax error, unexpected T_STRING in /home/example/public_html/example/cms/sites/all/modules/linodef/includes/linodef-filter.inc(57) : regexp code on line 1

Fatal error: preg_replace() [function.preg-replace]: Failed evaluating code: _linodef_find_view(2959Little, 3); in /home/example/public_html/example/cms/sites/all/modules/linodef/includes/linodef-filter.inc on line 57

This means the only way back in is to disable Linodef, open up the node in edit mode, and find and correct the error. No huge problem but this has happened several times and does not seem to get picked up by an error routine.

I have tested this several times with both (Linodef) 6.x-1.0-rc5 and Linodef 6.x-1.x-dev and can repeat this issue.