Often tracking down the solution is more time consuming than moving to a new User. Be very careful about moving items in your User's Library. Most likely the probem is in the User's Library folder.
Transferring files from one account to another on the same Mac
You can use your Shared folder:
1. Log in to the account you wish to copy files from.
2. In the Finder, navigate to the Shared folder. It is located in the Users folder.
3. Copy any files or folders you wish to the Shared folder, such as items on your desktop, in your Documents folder, in your Music folder, and so forth. You may be asked to enter an administrator password when copying certain items. Note: To ensure that you copy items (as opposed to moving items), hold the Option key as you drag files to the Shared folder. Depending on item permissions, some files or folders will copy by default, some may move by default.
4. Log out of the current account.
5. Log in to the new account (that you are transferring files to).
6. In the Finder, navigate to the Shared folder. It is located in the Users folder.
7. Copy any files or folders you wish from the Shared folder to the desired locations, such as desktop, Documents folder, Music folder, and so forth. You may be asked to enter an administrator password when copying certain items.
Watch your disk space during the process. You are duplicating your data. If you are low on disk space move one item (Documents, Pictures, Music etc) at a time then when you have verified the data is on the new User, delete from the old User before starting the next move.