View only shows 1 contact/account/lead

have 7.11.3 version was working fine till today . basically i am not sure what the issue is . i can only view 1 contact/lead/account at a time from the view Contacts screen .

[FATAL] Exception in Controller: Some garbage state left in stack
Needs to restore:
[error_reporting.sugar_smarty_errors]

Anyone got a suggestion on how to resolve this issue .

Randy