I do not get that error. Are you using the current versions of Julia nd Nemo? You may see a warning message with the first use each session.
Here is a transcript:. Let me see yours, and the output of versioninfo(). > using Nemo > c = AcbField(64) Complex Field with 64 bits of precision and error bounds > c(1,1) ..warning... 1.0000000000000000000 + i*1.0000000000000000000 > c(1,1) 1.0000000000000000000 + i*1.0000000000000000000 > f = ArbField(64) Real Field with 64 bits of precision and error bounds julia> f(1) 1.0000000000000000000 On Tuesday, October 18, 2016 at 6:27:28 PM UTC-4, digxx wrote: > > Hey, Sorry but I also get this error when I write > > r=AcbField(64) > r(1,1) > > Likewise > > r=ArbField(64) > r(1) > > gives me the same error... >