how to re-install advantage pack autocad 2010?

[morro73]

i have a PC WIN7-64bit system with ACA 2010

i had advantage pack since day 1 and everything worked perfectly

i somehow (after playing with the CUI?) can't see the menus and use the commands anymore (hide, isolate etc.)

is there a CUIX file for the advantage pack?

is it related to object ARX applications?

how to re-install it?

may it be just hidden?

thank you in advance

[morro73]

Below what is written,

does installing service pack update 2 will solve the problem?

how do i know which service pack is installed in my ACA2010?

thanks in advance