In reply to mouseliveson:
I had the same issue a while ago...it took me ages to work out what the problem was...it affected my running as well...I had pain in my knee but didn’t realise the pain came not under impact forces but when lifting my foot.
I think the pain originated from dropping off indoor boulder problems when I was unable to donwclimb.
I rested (both climbing and running) but most importantly stretched. The key stretch was lying on my back and using a sling to pull my straight leg up into the air.
I then reintroduced the climbing and running gradually...back to normal with the odd twinge which is a reminder to stretch and warm up.
I hope that helps and you have a speedy recovery.