Thread:Project:Support desk/Problem With File Upload: Could not acquire lock for "mwstore://local-backend/local-public/1/1e"./reply (7)

See my previous message. If it's not a permission issue, maybe the filesystem is missing some features required by the default lock manager (fsLockManager).

Try enabling the debug log and see if it gives more information about why it failed to acquire lock, or just switch the lock manager to the nullLockManager.