custom exception template mapping issue

Running CB3 M6 on CF9.

CustomErrorTemplate is set as:
<Setting name="CustomErrorTemplate" value="views/error/default" />

When an exception is thrown, the default coldbox template is shown
with a message stating that it cannot find my view:
Could not find the included template /owners/views/error/default.

The project is owners and the file definitely exists. What am I
missing? I tried prepending the path with a slash to no avail.

You are missing the .cfm