Hi Mahendar,
I checked already but this ws of no use as this error message is different as i mentioned. Moreover its not on same on all Machines. This is 2-3 Machines only . Juss for information its a Crm 4.0 to 2011 environment. while debugging i found error on this.get_element().save("RVItems") on main page. Its coming everywhere like Navigation Saving.
Thanks in advance.
Ragards,
Vandana Thakur.