I´m sorry to say that these changes did not fix the problem on my end: changing Host version in maifest.xml to <Host Name="ILST" Version="[19.0,22.0]"/> com.adobe.CSXS.8 PlayerDebugMode 1 All extension panels still show up, but the content is missing. And not only the panels I'm working on myself, but also panels I installed, like the Getty Image extension. So, I looked into the log files (in folder: /Users/[myname]/Library/Logs/CSXS) of my sample panel and compared these files: CEPHtmlEngine7-ILST-21.1.0-com.adobe.Samples.Panel.log CEPHtmlEngine8-ILST-22.0.0-com.adobe.Samples.Panel.log The first log file showed all items that had been loaded with the old Ai version, but the second has a sign problem: 2017-10-23 16:29:42:772 : INFO CEPHTMLENGINE, begin to verify the signature of "com.adobe.Samples.Panel" 2017-10-23 16:29:42:772 : INFO CEPHTMLENGINE, end to verify the signature of "com.adobe.Samples.Panel", isSigned false, isAdobeExtension false 2017-10-23 16:29:42:772 : ERROR Signature verification failed for "com.adobe.Samples.Panel"! The Getty Image extension log file has a lot of Errors as well: … [1024/092909.037613:ERROR:child_thread_impl.cc(762)] Request for unknown Channel-associated interface: ui::mojom::GpuMain [1024/092909.037613:ERROR:child_thread_impl.cc(762)] Request for unknown Channel-associated interface: ui::mojom::GpuMain … extension id:(none) … My colleges are using my packed extension I created for Ai 21 in Ai 22 and they work fine. So, it seems to be a problem with my development environment. Any ideas on this?
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