VS 2008 [RESOLVED] MySQL connector.net uninstall issue

i am using MySQL as back end and hence i uses MySQL connector.net version 6.5.4
now i want to update it to current version 6.6.4

i am unable to uninstall the current version under use 6.5.4
i am getting error
failed to uninstall performance counters (-2147024891)
what should i do please