Bozo question about MOVE tool

[jarvis393]

This a complete bonehead question but I am stymied so I have to ask it.

In the beginning tutorial you draw a basic house shape.
The steps are:

1: Draw a rectangle
2: Pull the rectangle into a cube
3: Bisect the rectangle with a line from midpoint to midpoint
4: Select the line with the arrow tool (turns the line blue)
5: Lift the roof with the MOVE tool.

In 8 out of 10 attempts all the MOVE tool does is shift the position of the blue line laterally.
Only every now and then does it actually lift the two planes that would constitute a roof.

Do I need to burn incense to make this happen consistently?
I am using a 3 wheel wireless mouse on a Mac Book Pro with the current free version of sketchup.

Any suggestions about what I might be doing wrong?
Do I need to move the line from the center? Do I need to select the move tool with the M key?
Why would this fail so consistently?

[massimo]

Inferencing on blue axis should be almost automatic if you move upwards the line. Anyway you can press the "up" (or "down") arrow on your keyboard, after you picked the line, in order to lock the inference on the z axis.
http://support.google.com/sketchup/bin/answer.py?hl=en&answer=70142&topic=2457918&ctx=topic

[cotty]

The "alt"-key (or alternatively the arrow up (blue axis)) will force the needed autofold, see here:
http://support.google.com/sketchup/bin/answer.py?hl=en&answer=94865

[jarvis393]

Thanks a lot.
Just what I needed.