I'm quite a newbie to PD.

Installing pd extended on a Windows 7 computer worked fine. As I'm developping a Wind Midi controller a more mobile computer is easier. PD for my Android tablet would be nice but making it works seems to difficult for me. Therefor I installed pd extended on an old laptop: a Compaq 700EA. I made a new Windows XP Pro installation, and installed pd extended.
As I try to open a patch (that worked on pd for Windows7) it crashes (error report available). If I 'reset to default values' it opens but it doesn't recognize dac~ nbx en vu commands.
Then I deleted pd extended and made a pd installation. This seems to work but it doesn't recognize the comport command.

Win 7 and Win XP installations are both 0.43.4

Does anybody have an idea how to solve this??

Greetings, Pammie

I run PD on Windows XP MCE SP3 and similar issues occur also to me.
For ex. PD Extended occasionally doesn't recognize some opcodes like csoundapi~ while PD Vanilla doesn't find any ASIO driver installed (I got ASIO4ALL) or doesn't support a higher sample rate; in these cases PD doesn't crash but it freezes and I'm forced to terminate manually the process. Often, this ending of process let Windows crash and reboot.
I also am waiting for more information about this issues and how to solve them but I have to tell you unfortunately no one has still helped me.

what does PD say?? In my situation it says "dac~ ... could not create"

Could it be due to processor type?? My W Xp (sp2) is an AMD. What's yours?