Consolidate resource & session storage issue

[juergmessmer]

Issue can be reproduced by:
• sendNewsletter (“hangs” with consolidate_resources enabled, otherwise it works!)
no server errors, but browser “SyntaxError: expected expression, got '<'”
• sendTestNewsletter (dito. but with server problem: Session->getSessionAttribute() fails because there is no authenticated user to retrieve the e-mail address from. Again: As soon as you use backend-development or disable consolidate_resources everything works fine.

How does consolidate resources interfere with the session?

Maybe related to the issue: turning on consolidate_resources again and reloading page throws this error:
[code] => 2, [message] => 'filemtime(): stat failed for /Users/jmg/Sites/reginaschlager/generated/caches/config/e10a891db39fb4b073e47a540c999ea7.cache',