This is the Lesson that has you change a package you created way back in Lesson 18, I believe.
Most importantly, did everything run fine for all the previous lessons?
If you open the Data Flow for Cache Product Table and right click on the stage > Execute does that Data Flow complete?
In your LKP - Product Name, make sure you have it set to Cache Connection Manager and not OLE DB.
If all else fails, download this package
and open it side by side with your package. Check each element and make sure they match exactly.