"Failed to save settings" when trying to add a Daily spending limit.

[Peter Magnusson]

Hi,

I can not set my daily spending limit to anything above 0 in my App Engine project.

I do have a working Billing account, with a healthy budget of about 2 months. The project is assigned to the billing account and everything that I am able to find is OK except...

...the daily spending limit on the appengine settings. 

It stays zero and if I try to save with anything else I get a generic error message saying...

Failed to save settings
An error occurred. Some settings may not have been updated successfully.
I keep getting a lot of "OverQuota" errors which I think is related to this.What have I missed?What can I do (besides filing a billing issue)?
Thanks in advancePeter

[Adam (Cloud Platform Support)]

Feel free to send me a private message with your project Id and a HAR file capture while reproducing the error in the console, so we can see the response from the server. You may generate a HAR file by following the instructions at https://toolbox.googleapps.com/apps/har_analyzer.