Well, whatta you know! I installed the v03 extlib & extlibx, and the v04 extlib & extlibx via update site to my 901 server. Using the 'tell http osgi ss com.ibm.xsp.extlib' command, only the v03 extlib and v04 extlibx showed up!
That appears to be a bug with the update site. We will have to investigate this.
To workaround this, you could install only 1 version of the extlib plugin, and one version of the extlibx plugin via the update site. Make sure only 1 version is enabled of each.
Alternatively, you can directly copy the plugins from each extlib & extlibx zip to the 'C:\data\domino\workspace\applications\eclipse\plugins”' folder. Similarly copy all features from the extlib & extlibx zips to the
'C:\data\domino\workspace\applications\eclipse\features' folder. Then restart your server.
Thanks for raising this issue.