Actually it might be because the code for color changed. Instead of

[ purple ] / [ purple ]

Try changing it to:

[ colorurple ] / [ /color ] (No spaces of course)

Just a test:

[purple]Is this purple? (Old code)[/purple]

<font color="purple">How about this one? (New code)</font>

The new software must be a fan of Oprah Winfrey.