RE: problem with level manager

Dear Steve,

I have removed duplicate level tables using following key in's
MDL LOAD LEVELAUDIT
LEVELAUDIT REPORT MASTERTABLES
LEVELAUDIT CLEAR DUPLICATETABLES KEEPLOWEST
LEVELAUDIT REPORT MASTERTABLES

but after that using LEVELAUDIT REPORT INVALIDELEMENTLEVELS lists many invalid elements in some level ID but i am not able to select or edit them using LEVELAUDIT SELECT ELEMENTLEVELBYID <level ID>
can they be a reason for my problem?

also when i open my file without selecting any pre configured project (selecting no project mode) I am not able to create any HVAC or piping elements. the message center says "Please select a valid part and family" this was not the case few days back and i have created ducting and piping layouts in this file.