Installing uipath in a new system and getting error message

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My system have updated version 2018.3 and installing in another system having uipath 2018.2 and getting above message. Search for uipath.v7.activities in package explorer but no such activity. pls suggest

@Boopathi In the package manger install all the packages if it already installed update the packages

Hi @indra all the packages installed but still getting same message. Also for some variable says generic value not defined. Do i need to update uipath in existing system also?