vsim syntax error in wavefront file

Hi.

I'm following a simple example implementing a 4-bit full adder in Quartus II 14.0. When the circuit is ready for functional simulation, I create a wavefront file from the Simulation Wavefront Editor. In order to simplify the process to find the error I only add one of the A input nodes in the wavefront file - 1 single bit. Always forced to low to make it even simpler. I leave the rest of the signals for the moment.

When I run the functional simulation, the following messages are displayed:

**** Generating the ModelSim Testbench ****

quartus_eda --gen_testbench --check_outputs=on --tool=modelsim_oem --format=verilog Prova1 -c Prova1 --vector_source="C:/altera/14.0/Waveform_4bitadder.vwf" --testbench_file="C:/altera/14.0/simulation/qsim/Waveform_4bitadder.vwf.vt"

...

Completed successfully.

**** Generating the functional simulation netlist ****

quartus_eda --functional=on --flatten_buses=off --simulation --tool=modelsim_oem --format=verilog --output_directory="C:/altera/14.0/simulation/qsim/" Prova1 -c Prova1

...

Completed successfully.

**** Generating the ModelSim .do script ****

C:/altera/14.0/simulation/qsim/Prova1.do generated.

Completed successfully.

**** Running the ModelSim simulation ****

c:/altera/14.0/modelsim_ase/win32aloem//vsim -c -do Prova1.do

Reading C:/altera/14.0/modelsim_ase/tcl/vsim/pref.tcl

# 10.1e

# do Prova1.do

# ** Warning: (vlib-34) Library already exists at "work".

#

# Model Technology ModelSim ALTERA vlog 10.1e Compiler 2013.06 Jun 12 2013

# -- Compiling module \4bitadder

#

# Top level modules:

# \4bitadder

# Model Technology ModelSim ALTERA vlog 10.1e Compiler 2013.06 Jun 12 2013

# ** Error: Waveform_4bitadder.vwf.vt(30): near "4": syntax error, unexpected INTEGER NUMBER, expecting IDENTIFIER or automatic or TYPE_IDENTIFIER or static

# ** Error: c:/altera/14.0/modelsim_ase/win32aloem/vlog failed.

# Executing ONERROR command at macro ./Prova1.do line 4

Error.

I'm going crazy trying to find the root cause of the error. Can anyone give me a hint on what is going on?

Thanks!

Enric