Uh-oh!

I encoded another message, but I don't know what it says...

Here's the message:

65, 64, 336, 585, 854, 1342, 1404, 1717, 608, 2231, 928, 3100, 3589, 4961, 1376, 5029, 5353, 5959, 6832, 7705, 2272, 7957, 9559, 2656, 9078, 11058, 10605, 10403, 11770, 10900, 12995, 4064, 12707, 16303, 13483, 18029

This time I was confident that I would remember how to decode it--I even wrote down a hint for myself, but I think there's a problem in it:

It must have been corrupted...

Hint:

I think there's a problem in it

Uh-oh!

I encoded another message, but I don't know what it says...

Here's the message:

65, 64, 336, 585, 854, 1342, 1404, 1717, 608, 2231, 928, 3100, 3589, 4961, 1376, 5029, 5353, 5959, 6832, 7705, 2272, 7957, 9559, 2656, 9078, 11058, 10605, 10403, 11770, 10900, 12995, 4064, 12707, 16303, 13483, 18029

This time I was confident that I would remember how to decode it--I even wrote down a hint for myself, but I think there's a problem in it:

It must have been corrupted...

Hint:

I think there's a problem in it