I have trans fluid all over my front differential of my 1990 Jeep Cherokee Laredo.
Most likely cause would be from a leak coming from the transmission cooler lines that attached to the radiator. One thing to remember is fluid does not travel up hill. Keep that in mind when looking for the source. Top off the transmission fluid level. Clean the area all around and above. Operate and look for the leak. Once the leak is found make the necessary repairs.
I do recommend using a 8mm socket instead of a flat blade screwdriver to tighten your hose clamps. This will give you that little bit extra that you need to get it tight.