Crashes with new math engine

[prj]

Build 5.00.7004.00

Crashes if I enter the following into the formula box (axis formula) and press OK:
SUM(1;2;3;4;5;6;7;8;9)+SUM(1;2;3;4;5;6;7;8;9)+SUM(1;2;3;4;5;6;7;8;9)+SUM(1;2;3;4;5;6;7;8;9)+SUM(1;2;3;4;5;6;7;8;9)

The following as well:
CELL(INDEX()-1;FALSE)

[Mangus]

Infinite recursion will currently crash the engine. Avoid doing it. This is the problem with your second example.

I'll investigate the first.

[Mangus]

First issue is fixed in next build.