After updating to A6.4 (Commercial) my model(biped01), when climbing stairs or using a lift, walks at the lifted level and will not fall to ground. It was fine in 6.3.
Also, when adding menu01.wdl to levels this error occurs:

<(saveLoad00_active=1)>
Menu01.wdl 893:0 Error(63): Parameter unknown saveload00_active

<(saveLoad00_active==1)>
Menu01.wdl 896:0 Error(63): Parameter unknown saveload00_active

<menu01_active_b = 0;>
Menu01.wdl 898:0 Error(29): Keyword unknown menu01_active_b

<return(0);>
Menu01.wdl 899:0 Errpr(29): Keyword unknown return

The only solution I have right now is to remove the menu script.
Can anyone please help?

Have you installed the templates from download page and the update from the template forum -> Template Tuesday Update, after you upgraded to 6.40.5?

Dusty

Thanks for that Doug. I installed the Tuesday update and that helped with the menu problem.
However my biped script applied to a model is still having problems. If I create a new game in the 6.4 version the biped falls as expected but if the game was made in the 6.3 environment and updated to 6.4(templates al updated), no matter whether the script is removed, the outer world rebuilt or the biped model re-added, when going up steps or using a lift, he will not fall to ground but remains at the height he leaves the lift and can walk in mid air. It is really wierd.
Anyone have a solution?