Ok, I will answer my self ... in case someone will hit same issue ... Do not check only your form. Seams that if there is any other attribute added to session which is not extending Serializable, whole session fails to serialize, but you will get only warning on this in log, and you will get such message.
Another hint - there is more log levels than error ;) On Dec 30, 12:24 pm, Konrad <[email protected]> wrote: > BTW: This error ocures only on hosted mode, in local running app > everything is fine. -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
