MXML problem in corel 12 & 10

This is urgent guys .i am sick of corel. this is d problem
1.corel 12.0 shows mxml4 error

2. corel 10.0 runs but on giving open
command stops rsponding.

3.i hav installed corel 10.0 after having my grey matter burst out on corel 12.0

4. tried installing,uninstalling, dont want to make another user.

i hope youd help...

Stanley