We upgraded our environment from Web 8.1.1 to Web 8.5. We have a few GUI Extensions that uses CoreService (2015) working in one environment. We made a clean install of 8.5 and tried to re-install the GUI Extension, but after we enable it, the CMS gets broken and we need to do an IISRESET.
In Chrome Console I can only see this:
http://localhost/WebUI/Editors/Base/Views/Authentication/Authentication.aspx failed to load within 10 seconds Navigation.js:1
I've enabled Failed Trace Logs in IIS and the only Warning I got is this one:
I also tried to ping CoreService with WCF Test Client and got this:
The CMS shows while broken: The webpage at
http://localhost/WebUI/Editors/Base/Views/Authentication/Authentication.aspx might be temporarily down or it may have moved permanently to a new web address.
The webpage at
http://localhost/WebUI/Editors/Base/Views/ProxyView/ProxyView.aspx?pagePath=~/../CME/Views/Welcome/Welcome.aspx might be temporarily down or it may have moved permanently to a new web address.
If I remove the extension from system.config it works again (after IISRESET).
I also set log level to DEBUG in system.config but nothing is logged.