I tried to calculate the limit of an expression, say:
Limit(1, c -> I, Assumptions -> Im(c) > 1)
And I got a message
Limit::cas, At first I thought that maybe the name
c was used by some packages. The problem persists, even if I replace it
c with other names. The version of Mathematica on my computer is "11.0.0 for Linux x86 (64-bit) (July 28, 2016)". Does anyone have similar problems with other versions?