problem animation environment study

[Eritro]

because I just click on a bond to animate (study environment, linear representation) tells me:
"Impossible to apply the specified value. type a different value"
If the same constraint is born without problems in the standard environment?
is a simple movement

 

[Zac69]

Maybe it's not about running, but time or some other variable. try to control

 

[Eritro]

Thank you very much for the answer.
However carefully checking there was nothing wrong or conflicting.
I eliminated the problem by exporting all the assembling into step and reopening it. I fixed everything and bound only what I needed. successful animation. remains the problem that for 17 seconds video recording takes 6 hours and 43 minutes .. and without exaggerating with the definition!