Row 2 requests style code 0, which does not exist ...

[doug.c]

I'm receiving an error (Row 2 requests style code 0, which does not exist in the style file (.drt) for this session) when I attempt to run a DirectRT input file, which I've attached. I've already read the thread pertaining to this error, and errors like it, to no avail. I don't believe there are any characters beyond the row terminators, I'm not actually requesting style code 0, and I'm using English (United States) regional settings. I'm getting this error across a number of similar programs, across a number of systems running DirectRT. Any help would be greatly appreciated.

[jarvis24]

How many stimuli are you trying to fit into the first trial?

[doug.c]

225 to 230 distinct image (.bmp) files. Why, is there a limit?

[jarvis24]

99, I think. But you can spread them out across trials for more.

[doug.c]

That's fine, although it may create an issue, which hopefully is surmountable. I'll need to run the trials back-to-back within a MediaLab experiment. I recall from reading the manual that this is not advisable. What adverse outcomes might I expect from taking this approach?

I don't recall reading in the manual that there is a 99 stimuli upper-limit in DirectRT input files. Perhaps I missed it, or simply don't recall. If it's not in the manual though, it might be nice for end-users if you were to add it.

I'm looking forward to your response.

[jarvis24]

You're right, it doesn't seem to be in there--strange that hasn;t come up before because I think it was added in v2004 (it used to be 20 stimuli per trial limit before that!).

May I ask why you want these to be all on the same trial? Note that back-to-back trials within a DirectRT session is just fine. It's running back-to-back sessions (or input files) without an intervening item (like an MediaLab instruction screen) that can acause trouble. A bunch of DirectRT sessions with 500 trials a piece could be scattered about your MediaLab questionnaires, no problem.