Quartus II 10.1 in ubuntu 10.04 Launch problem

quartusII was working fine sometime ago...

but when i tried to launch it today it is not launching :( and giving me following error:

quartus: error while loading shared libraries: /media/3c08682d0867e47c/linux_altera/quartus/linux/libjtag_client.so: file too short

my Paths are

export PATH=${PATH}:/media/3C08682D0867E47C/Linux_Altera/quartus/bin

export PATH=${PATH}:/media/3C08682D0867E47C/Linux_Altera/quartus/linux

what could be the probable reason and the solution???????