Exchange 201 error 106 after removing CAS & HUB

Hi,

After i removed the CAS and HUB roles from one of the exchange servers 2010 the below error 106 make my event viewer very ugly

any idea how to get ride of it ?
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Performance counter updating error. Counter name is Client-side Cache Hits, category name is MSExchange Active Manager Client. Optional code: 1. Exception: The exception thrown is : System.InvalidOperationException: The requested Performance Counter is not a custom counter, it has to be initialized as ReadOnly.
   at System.Diagnostics.PerformanceCounter.Initialize()
   at System.Diagnostics.PerformanceCounter.IncrementBy(Int64 value)
   at Microsoft.Exchange.Diagnostics.ExPerformanceCounter.IncrementBy(Int64 incrementValue)
Last worker process info : Last worker process info not available!
Processes running while Performance counter failed to update:
5536 conhost
9056 vxmon_full
976 svchost
2944 svchost
6292 rdpclip
2504 schedul2
11608 mmc
6284 conhost
1160 svchost
5296 store
2340 TrueImageMonitor
5688 MSExchangeMailSubmission
928 svchost
6848 conhost
3912 coreFrameworkHost
10284 mmc
9228 mmc
12576 msexchangerepl
1936 VivaldiFramework
752 svchost
2720 svchost
552 csrss
2324 winvnc4
11976 conhost
5472 csrss
544 wininit
4772 w3wp
9656 dllhost
6052 winlogon
7232 dwm
8216 schedhlp
728 sppsvc
2804 beremote
920 LogonUI
11204 uiSeAgnt
9192 explorer
2296 svchost
11612 svcGenericHost
10568 Microsoft.Exchange.ServiceHost
312 svchost
7216 TimounterMonitor
1304 spoolsv
3864 uiWatchDog
12924 MSExchangeMailboxAssistants
1888 miniwinagent
1688 aqagent
504 csrss
9368 svchost
500 svchost
10032 msftefd
300 smss
5612 mad
1668 svchost
2256 sqlwriter
7964 popup
6584 msdtc
10720 MSExchangeTransportLogSearch
6188 iexplore
2444 winvnc4
3428 MSExchangeADTopologyService
9916 Microsoft.Exchange.Search.ExSearch
656 lsm
7156 SMEX_SystemWatcher
2032 msftesql
652 svchost
9908 Microsoft.Exchange.RpcClientAccess.Service
648 lsass
7536 iexplore
640 services
2016 MSExchangeThrottling
9304 conhost
832 svchost
9972 w3wp
7132 vmms
6152 coreServiceShell
1416 SMSvcHost
9688 cmd
3184 svchost
11456 inetinfo
12636 dllhost
1800 PresentationFontCache
1208 sqlservr
3768 svchost
12040 bedbg
10340 SMEX_Master
7900 svchost
3264 mmc
9080 taskhost
4596 svcGenericHost
8088 svchost
5920 javaw
2228 RaidServ
4 System
988 svchost
592 winlogon
0 Idle
Performance Counters Layout information: FileMappingNotFoundException for category MSExchange Active Manager Client : Microsoft.Exchange.Diagnostics.FileMappingNotFoundException: Cound not open File mapping for name : Global\netfxcustomperfcounters.1.0msexchange active manager client
   at Microsoft.Exchange.Diagnostics.FileMapping.OpenFileMapping(String name, Boolean writable)
   at Microsoft.Exchange.Diagnostics.FileMapping..ctor(String name, Boolean writable)
   at Microsoft.Exchange.Diagnostics.PerformanceCounterMemoryMappedFile.Initialize(String fileMappingName, Boolean writable)
   at Microsoft.Exchange.Diagnostics.ExPerformanceCounter.GetAllInstancesLayout(String categoryName)