Two days ago, I created a new SOE and loaded into ArcGIS Server 10.1. When I started the mapservice w/ this soe extension checked, I received the error: Failed to initialize server object 'xxx': ClassFactory cannot supply requested class. In this ArcGIS Server, I had another 2 soe files and both of them run well.
From http://support.esri.com/en/bugs/nimbus/TklNMDg0MzUw, it could be due to the Bug NIM-084350 mentioned in this report. This report mentioned that the bug would be gone in V10.2.
Followed the direction, I upgraded my ArcGIS Server to V10.2.2. I also recovered another 2 soe's and both of them work fine. Then I worked on the new .soe.. Unfortunately, the error is still there. I tried multiple times. Every time I tried to start the service, it not only pops out the error, but also crash / disable the mapservice. So, I have to re-publish the mapservice.
Is there any class in my project that causes this failure? I tested over and over again and believe that all of the classes used in the project are valid and also very common/basic ones since they all are used in another 2 soe's as mentioned above.
Unfortunately, there are few threads related to the bug reported here. I wish I can get some good hints from this site. Thanks.
