REALLY wound me up. Flex not seeing debug

This kills me. I have had it before and formatted my PC so forgot about it.

I have installed the debugger player, it worked yesterday. Nothing has happened or changed since lastnight… i had a good idea… went to implement it… and bam…

Back to this.

Flash player debug is installed. I restarted and it still says it:

Alternate HTML content should be placed here. This content requires the Adobe Flash Player.

How do i fix this issue? It has happened 3 times in 4 months and i spend ages trying to fix it to no avail.