rcall hangs when executed via include() but works when executed directly

I *successfully* do the following step-by-step by hand in the CLI (aka REPL I guess).
```
using Reduce
@force using Reduce.Algebra
println("starting reduce")
R"in \"randmat.txt\"$" # executes Reduce commands in randa.txt
A = eval(rcall(:(randmat(6))))
```
The dialogue is
```
julia> using Reduce
julia> @force using Reduce.Algebra
julia> println("starting reduce")
starting reduce
julia> R"in \"randmat.txt\"$" # executes Reduce commands in randmat.txt
julia> println("starting rcall of the Reduce function")
starting rcall of the Reduce function
julia> A = eval(rcall(:(randmat(6))))
6×6 Matrix{Int64}:
0 0 0 0 1 6
2 0 0 1 6 5
2 0 0 3 7 6
0 1 1 2 0 7
3 0 0 6 7 3
3 2 5 1 3 8
julia> println("finished rcall")
finished rcall
julia>
```
But when I try to execute it a a sequence of commands in a file, it fails in the eval(rcall(.)) step: execution hangs waiting for something. So I expanded the eval(rcall()) and the problem appears to be rcall() (which I understand is derived from another "call()" function). Trace printing in my script reports the following, and hangs in the rcall
```
julia> include("test.jl")
starting reduce
setting up Reduce function randmat
doing rcall
```
Any suggestions?