Hello Marco,
i guess it has something to do with bracket.
Try to remove space before bracket, perhaps here:
ampdbfs (p4), i.e. ampdbfs(p4).

If i am correct ... 

Csound6 has problems with space before bracket due to new 
functional use of opcodes (ok, maybe this is not the right way to say).
Anyway should be that. Maybe.

ciao,
francesco.
 




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Try taking out space between ampdbfs and (p4), that is not parsing in Csound 6.

On 11 Nov 2013, at 09:11, Marco Stroppa  wrote:

> Dear Csounders,
> 
> I wonder whether something has changed in the new parser of Csound 6.
> The following line compiles without problems in 5.19:
> 
> iamp 		= (p4 > 0.0 ? (p4*0.001*0dbfs) : (ampdbfs (p4)))
> 
> while in Csound 6 the error below is displayed.
> 
> error: syntax error, unexpected '(', expecting ':'  (token "(") line 23:
> >>>iamp         = (p4 > 0.0 ? (p4*0.001*0dbfs) : (ampdbfs ( <<<
> Parsing failed due to invalid input!
> WARNING: Stopping on parser failure
> 
> Any cues, please, about how to solve the problem?
> 
> Thank you very much in advance.
> 
> Marco
> 

Dear Csounders,

I wonder whether something has changed in the new parser of Csound 6.

The following line compiles without problems in 5.19:

iamp = (p4 > 0.0 ? (p4*0.001*0dbfs) : (ampdbfs (p4)))

while in Csound 6 the error below is displayed.

error: syntax error, unexpected '(', expecting ':'  (token "(") line 23:
>>>iamp         = (p4 > 0.0 ? (p4*0.001*0dbfs) : (ampdbfs ( <<<
Parsing failed due to invalid input!
WARNING: Stopping on parser failure

Any cues, please, about how to solve the problem?

Thank you very much in advance.

Marco