I can't seem to put bricks on top of 1. Is this normal? If not, then help?

Seriously. How many times do I need to post this.
We aren't the loving tech support team. We don't know why the forget Minecraft won't run on your Pentium 4 single core with an ATI Radeon 9500. Seriously, we don't know and we aren't saying that to make fun of you.
Every time any game I play has an issue I immediately do basic diagnostics. What does it consist of? It consists of asking the basic question:
Can I run the damn game? Of course, I can, but can you?
Next you have to ask yourself if you changed anything with the game itself, or did it change recently, i.e. a patch or update.
Finally if none of those help you then you
go to the game's technical support forum or their actual customer support. Contrary to popular belief, customer support provided by publisher companies / developers aren't made up of monkeys smashing their feces on keyboards. On three occasions I contacted EA support with problems about Command & Conquer The First Decade, Command & Conquer 3, and Red Alert 3. They solved each of my problems. Sure you have to wait, boo hoo, that's life.
tl;dr: GO TO SUPPORT FORUM.
I know I'm pretty angry in this post but if you actually ask if this is necessary to get it through 90% of people's thick skulls, then you really should try lurking more.