>
> I have been polishing off a note list composition which has been my focus
> for the last fortnight.  I have been working out of town on my macbook,
> which is running Csound v5.13 with CsoundQT version 0.6.1 (I've not wanted
> to 'fix-what-ain't-broke'.  This setup has worked very reliably for a
> while so have not updated for a while).
>
> My main desktop is an iMac OSX 10.7.3 which I have been running 5.16 (and
> as of this evening 5.17).
> When I transfered my composition's .csd to my desktop I cannot get it to
> run.  The console greets me with:
>
> "Internal error in print_input_backtrace()"
>

That message seems to come from a score error not in a macro but this code
has not changed since ~2008

> Is this significant?  The result has been the same before and after
> installing 5.17
> Is there something I'm missing, bringing a file written with .13 to .17?
>
> This also appears just before the error in the console:
>
> "sread: illegal opcode *
> 	section 4: at position 0"
>

That looks more important.  There is a * in your score at the start of a
line in the fourth section.  So your first call should be to look for that

We really do need to take a glance at the score or better .csd

Or locate the section that causes the messages

==John ff

Thank you both for your prompt replies.
Problem is solved.
Dr B debugged it in class yesterday.  Turned out I had a rogue value after a linenr which, as Victor suggested, was tolerated in the earlier version but not in .16/17.

I'm going to tidy up some transitions and then submit it to the podcast to share soon.


Thanks again

-Jason