Trouble opening Tekkit Classic? Help?

[Dogesaur]

I have been playing Tekkit for a while now, and it's been great. However, recently, it won't start up. When I try to play I get an error message saying

 

'Error installing the following pack: Tekkit

An error occured when attempting to delete: C:/User/MyName/AppData/Roaming/.technic/modpacks/tekkitmain/mods/1.6.4/CodeChickenLib-universal-1.6.4-1.0.0.61.jar from the cache.

Please check your system settings.'

 

I have tried deleting and reinstalling it, I have removed all of the contents from the file which is giving the error, I have deleted all of my Resource Packs but it still wont launch.

 

Someone help?

[Curunir]

That looks like you are mixing up Tekkit Classic and regular Tekkit (Main). What are you actually starting from the launcher?

[Dogesaur]

Tekkit Main, not Classic, my bad

[Curunir]

Well, if you have an issue with Tekkit, welcome to the bug tracker.