Can I sue the tax collectors office for selling me a property at auction, that he neglected to inform the new owner of its tax delinquency; AND causing me to lose the property through said negligence, as I purchased it at a county tax lien sale from the county?

No, they have no legal obligation, I will assume this was an IRS tax lien or a city tax lien ? Since that is the only tax lien that can remain after the property tax sale ?

But the buyers have an duty to investigate the property, including title searches and the such.

Rule of thumb is anyone can sue anyone for almost anything. Will you win and will you collect are the two big unknowns.