Thanks for sending your project. It seems that somehow your project has several proxy and reader instances whose internal metadata has a userClassName containing spaces. This might have been a leftover from a bug in a previous version of Architect, which our new validation doesn't like.
I'm going to open a bug ticket in our system to handle this situation in a less spammy way. This isn't an error condition and shouldn't affect you other than being annoying, but we don't want to be annoying.
In the meantime, you can do the following to remove the warnings from your project:
Make a backup of your project files
Search the files in your project's "metadata" directory for the following strings (there will be about 50 occurrences):
"designer|userClassName": "Ajax Proxy
"designer|userClassName": "Json Reader
Modify those values to remove the space, and save the files
Reopen the project in Architect
This should allow your project to open without warnings. Let us know if you continue to see this issue.
Sencha Architect Development Team
I had the same situation with a migrated project of Ext Designer 1.2.3 (which had to be downgraded to 1.2.2 manually in the project file), imported in SA 2.1, then used in SA 2.2. All userClassNames were built with the schema "Json[whitespace]reader" etc., so it's a topic which would be only resolvable by advanced users who can edit the project metadata directory manually. A better approach would be to change the imported userClassNames without whitespaces.
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