GWT 2.5, Developer Mode, and _FieldSerializer errors

I have upgraded to GWT 2.5 and get this error in development mode

Caused by: java.lang.Error: Unresolved compilation problem: com.xxx.gwt.client.type.BaseId_FieldSerializer cannot be resolved to a type

I do not get it with compiled code nor did I get these with GWT 2.4 (unless it was due to a real error, but then GWT compile (non dev mode would fail as well).

I was able to get it to work for a while, and part of the application works, but when it gets to this code, it fails

BaseId does implement Serializable and has a no-arg constructor.

Is there any known issues with GWT 2.5 and dev mode and/or any suggestions on where to look to try to figure this out? I delete the gwt-unitCache directories; no changes.

Thanks.

--
You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit+unsubscribe@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.