Help Helppp... Gtalk dissappear from my applications

[condoloky]

hi... i had and i was using gtalk on my device... it came with it... so i could make calls to other contacts on gtalk....i have an xperia arc rooted, so i install google+, and after that i didnt see the application of gtalk.... i search on my application and it wasnt... so i decide to unistall google+.. and try to download gtalk... i found and download the gtalk APK, but when i try to install it... i said that no intallation made.. and tried and tried and i cannt install it again... please can you help me or tell me wats is going on???