Issue with text_height in Drawing Detail Files

Hi Everyone

I am using two separate detail files for two different config options:

drawing_setup_file
format_setup_file

When I create a new drawing, I get the following error in the Message Log:

Error(s) in C:\Program Files\PTC\Creo 11.0\custom\ISO-prt-asm.dtl. See datafile.ers. 

 In datafile_error.txt, the error is:

ERROR - C:\Program Files\PTC\Creo 11.0\custom\ISO-prt-asm.dtl, line 2: Invalid value 'CALCULATED' for keyword 'text_height'.

Note:
Both detail files contain the same config option text_height.

In ISO-prt-asm.dtl (used as drawing_setup_file), the entry is:
text_height CALCULATED (Causing an error)

In ISO-frm-prt-asm.dtl (used as format_setup_file), the entry is:
text_height 3.5 (Not causing an error)

OBSERVATION:

If I changed the value of "text_height" from 3.5 to "CALCULATED", ISO-frm-prt-asm.dtl file is also making an same error I mentioned above.

Software: Creo Parametric 11

Can Someone help me on this?

Thanks.