>>More info please?
>>
>>Would it be safe to put the log in the terrarium?
>>
>>They're just little spts of sap in places on the bark. Should I scrape them off or just throw out the log?
I will stress first of all that this is pure speculation.
That being said, I'd expect it to be ok even if you didn't scrape off the sap, though I probably would scrape it off anyway. You certainly did your best to make sure the log was sterile, and presumably the sap has dried, so it's not sticky anymore or easily ingestible. Other than those two possible hazards, I don't see how it could be a problem, and either/both of those would be eliminated by scraping it off anyway.
The picture shown before was pretty obviously a joke, being a picture of a lizard that got trapped in a big pile of sap which later turned into amber. Little spots obviously couldn't have that effect. 
Basically my opinion on this is that it's unlikely to be a problem, but if you're in any way uncomfortable with it, it's your pet and you're right to be cautious; it's better to throw something out if you're unsure than to be worried about your little friend.
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0.1 Albino Leopard Gecko - Tigger
0.1 Crested Gecko - Pooh-Bear