[xwiki-users] Can't remove groups

Greets, Seems like I am no longer able to remove groups in one of my xwiki installations. I am still able to in another. As seen in the excerpts below from catalina.out, one such group in SplunkAdmins. This group appears in xwiki.cfg where it is mapped to an AD group and had been populated with one member who I have removed. The other group is “foo” and I created it just now. I can’t remove either. Any ideas why not? Thanks! 2017-05-15 16:48:33,660 [http://dwswiki10.westmarine.net/xwiki/bin/admin/XWiki/XWikiPreferences?xpag…] WARN o.x.c.i.DefaultCSRFToken - CSRFToken: Secret token verification failed, token: "VuvtkWH4Qv1NiLvTaNoISw", stored token: "hbAO9bUvYVuJLFxM8Mud7Q" 2017-05-15 16:48:41,026 [http://dwswiki10.westmarine.net/xwiki/bin/admin/XWiki/XWikiPreferences?xpag…] WARN o.x.c.i.DefaultCSRFToken - CSRFToken: Secret token verification failed, token: "VuvtkWH4Qv1NiLvTaNoISw", stored token: "hbAO9bUvYVuJLFxM8Mud7Q" The information contained in this transmission may contain West Marine proprietary, confidential and/or privileged information. It is intended only for the use of the person(s) named above. If you are not the intended recipient, you are hereby notified that any review, dissemination, distribution or duplication of this communication is strictly prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. To reply to our email administrator directly, please send an email to netadmin(a)westmarine.com.