Do you have GTA 4 installed?
You need a message to express regret or apology.
Damn forum, but did you purchase The Lost and Damned—or the Episodes, which includes TLAD and TBoGT?
You can verify your status by following the provided steps.
Verify your Steam collection, it should appear as GTA IV Episodes of Liberty City or as DLC for GTA IV.
Theres a difference...
Visit the recommended page for MrUnknownEMC on Steam Community.
Rocko Mine resembles the style shown by @Bubblewhale.