Cannot connect to BitBucket after 2.4 Update

[crisp330]

After updating SourceTree for OSX to 2.4, I can no longer connect to Bitbucket in order to push or pull updates.  I get the following error:

Please make sure you have the correct access rights and the repository exists.
Permission denied (publickey).
fatal: Could not read from remote repository.

Before updating to 2.4 I had no issues.

If I go to SourceTree > Preferences > Accounts and edit my account, it lists HTTPS.  If I switch it to SSH it says "SSH Key: no key found".  I can generate a key, but I do in fact already have a key properly setup and working in ~/.ssh.  

I can use the command line without issue, just not SourceTree.  Basically the update has rendered SourceTree useless for me.  How can I resolve ASAP?

[crisp330 · Accepted solution]

I resolved this after finding this thread:  https://answers.atlassian.com/questions/45396128.

Somehow my key was not added to OpenSSH.  Using the following command resolved this:

ssh-add -k [path_to_private_key]