Updating webparts

When working in a sharepoint project I have to create some webparts. Initially it was for the port 80 application, and was going fine, but when we created a new application in a different port, thing gone crazy. I have developed the web parts using VS Webpart template, clicking deploy webpart menu, only deploys the webpart on port 80 application. I have tried to modify the setup.bat and changed the url http://localhost to http://localhost:9090 but it is also not helped.

After some time, I un-installed the webprt assembly from GAC, re-installed the same with gacutil -i command. Then resets the IIS using “iisreset” command.

Now it is working fine.