Sorry, no time to explain my whole knowledge in a minute about RENAME and -RENAME, what i learned in many years.
But: "I'm on LT so can't use scripts." is wrong. There aren't differences between AutoCAD and AutoCAD LT
What you mean is that AutoCAD LT have no API (LISP,VBA,.NET,C++ ),
thats right, but SCRIPTs are simple textfile who contains normal commands and values for commandline-input.
It more like a MenuMacro, what is also available in LT version (each button stores and uses a menumacro).
Do you know what the problem is, so I know going forward what will work, and what won't?
Ho can i get Layernames from ACAD to my Textfile?
1. Mark the Layer in Layer properties manager and use CTRL+C/CTRL+V
2. Command: -LAYER, Option ? And Copy the Layernames from yout TextScreen [F2]
then write the Script to use the -RENAME command:
<note: it isn't meanful for 5 Layers, but for 100x 5 Layers it is and RENAME is not the best command for Script-Beginners>
;;;copy from naxt line to
_-RENAME LAYER "MYLAYERa"
"MYLAYERa NEW"
_-RENAME LAYER "MYLAYERaa"
"MYLAYERaa NEW"
_-RENAME LAYER "MYLAYERaaa"
"MYLAYERaaa NEW"
_-RENAME LAYER "MYLAYERaaaa"
"MYLAYERaaaa NEW"
;; copy until the line above this line and paste it into a Textfile with name TEST.scr or
paste it into your commandline CTRL+V
Create DWG with the Layers MYLAYERa ->MYLAYERaaaa and test this sample!