Timeline issues - why can't I drag cursor along timeline or manually keyframe?

Question

Never had a problem before scrubbing my mouse along the timeline to review footage, all of a sudden it's playing up. It will only allow me to click and select rather than scrub through

Also playing up is being able to do manual keyframes on the timeline EG. changing opacity or audio levels by just dragging the line down, it simply won't allow me to do it

Has anyone else had this problem? Tried the trashing prefs thing etc.

Peru Bob · Answer

Delete the Media Cache and Media Cache files:
https://community.adobe.com/t5/premiere-pro/faq-how-to-clear-your-media-cache-in-30-seconds-in-premiere-pro-2020/m-p/11017257/thread-id/260446?page=1

If that doesn't work, try resetting the preferences:
https://community.adobe.com/t5/premiere-pro/faq-how-to-reset-trash-preferences-in-premiere-pro/td-p/8236158?page=1

If that doesn't work, try resetting the Workspaces:
Reset a workspace
Reset the current workspace to return to its original, saved layout of panels.
1. Do one of the following:
• Click the Workspace menu icon and select Reset to Saved Layout.
• Choose Window > Workspace > Reset to Saved Layout.
from here:
https://helpx.adobe.com/premiere-pro/using/workspaces.html

If that doesn't work, try Preferences > Audio Hardware and set Input to None.

If that doesn’t work, try updating or rolling back your graphics driver directly from the video card manufacturer’s site. If NVIDIA, do a clean installation of the 517.40 Studio Driver (NOT the Game Driver)

If that doesn't work, try creating a new project and import the old one into it.

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