Solved
a point A is constructed
I want to rename A to A_1 but type A_1 error !
The same problem 
a point A is constructed
I want to rename A to A_1 but type A_1 error !
hi
this bug is reported in a post in german https://help.geogebra.org/t...
chris
workarround meantime: be sure A_1 is not used for another object
double clic on A in algebra window, then change the name to A_1
it seems work for me
Thanks, fixed for next release.
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