Hi, I would like to use the CCCS element in my analog simulations, but whenever I add such an element, the simulation fails with error messages that do not quite make sense.

I have reduced my simulation to the following netlist:

simulator lang=spectre
global 0
include "$ADE_UTILS_BIN/spectre_gnd_vss.scs"
simulatorOptions options psfversion="1.4.0" reltol=1e-3 vabstol=1e-6 \
iabstol=1e-12 temp=27 tnom=27 scalem=1.0 scale=1.0 gmin=1e-12 rforce=1 \
maxnotes=5 maxwarns=5 digits=5 cols=80 pivrel=1e-3 useterms=name
ac ac start=1e9 stop=1e11 lin=50 annotate=status
modelParameter info what=models where=rawfile
element info what=inst where=rawfile
outputParameter info what=output where=rawfile
designParamVals info what=parameters where=rawfile
primitives info what=primitives where=rawfile
subckts info what=subckts where=rawfile
save vmaster vslave
saveOptions options save=selected useprobes=yes

rslave (vslave 0) resistor r=1K
rmaster (vmaster 0) resistor r=1K
imaster (vmaster 0) isource dc=1m mag=1m type=dc
islave (vslave 0) cccs gain=0.1 probe=imaster port=1

When I try to run this using the command "spectre netlist.scs" I get:

*******************************************
AC Analysis `ac': freq = (1 GHz -> 100 GHz)
*******************************************

Error found by spectre during AC analysis `ac'.
ERROR (CMI-2239): islave: Controlled source is using `imaster' as
controlling element, which is not available. The controlling element
might have been removed because it is dangling. Ensure that `imaster'
is available and rerun the simulation.

Opening the PSF file netlist.raw/ac.ac ...

Internal error found in spectre at freq = 1 GHz during AC analysis `ac'.
FATAL (CMI-2010): Assertion failed in file `cccs.c' at line 3384.
Encountered a critical error during simulation. Run `mmsimpack' (see
mmsimpack -h for detailed usage information) to package the netlist and
log files as a compressed tar file. Then, contact your Cadence
representative or submit a service request via Cadence Online Support,
including the tar file and any other information that could help
identify the problem.
FATAL (SPECTRE-18): Segmentation fault. Encountered a critical error during
simulation. Run `mmsimpack' (see mmsimpack -h for detailed usage
information) to package the netlist and log files as a compressed tar
file. Then, contact your Cadence representative or submit a service
request via Cadence Online Support, including the tar file and any
other information that could help identify the problem.

What is going on? Am I instantiating the CCCS improperly or is there a software bug? I am using Spectre version 19.1.0.561. Thanks