Symbolic Bug 45423, is there a workaround

[Thomas D. Dean]

SymString = "syms s R1 C1 R2 C2 R3 R4 I_V1 V1 v_1 v_2 v_3 v_4"
eval(SymString);


## this produces an error.  An open bug report exists.
Astring = "A=[ 0+1/R1 0-1/R1 0 0 1; 0-1/R1 0+1/R1+s*C1+1/R2 0-1/R2 0 0; 
0 0-1/R2 0+1/R2+s*C2+1/R3 0-1/R3 0; 0 0 0-1/R3 0+1/R3+1/R4 0; 1 0 0 0 0;]";
eval(Astring)

## this does not produce the error
Astring = "A=[ 0+1/R1 0-1/R1 0 0 1; 0-1/R1 0+1/R1+s*C1+1/R2 0-1/R2 0 0; 
sym(0) 0-1/R2 0+1/R2+s*C2+1/R3 0-1/R3 0; sym(0) 0 0-1/R3 0+1/R3+1/R4 0; 
sym(1) 0 0 0 0;]";
eval(Astring)

This is in the middle of a complex matlab script, scam.m.

Is there an easy workaround?

Tom Dean