english is not my first language, so i wil ltry to explain the best i can my problem.
i made a survey, about 2000 points with my TSC3\R6. I exported my CSV file to a PNEZD file with comma seperated. When i try ti import the file (CSV then i made a .txt), C3D tells me "no point file format match found". Then I opened the txt file, searched for any error that would not let me import my points. The only thing i have found would be the description of my points that sometimes had a space between 2 words (ex: bt balast and ht balast) so i changed it to bt-balast and ht-balast. i looked further and didnt found anything else. heres a sample of my txt file:
Now i have to draw something but i cant even find why importing points fails in C3D.
some usefull informations maybe:
windows 7 32bits SP1
autocad civil 3d 2013 (not yet activated, next week)
Is your CSV file open in Excel...? That will cause the failure you're describing. Pretty annoying, especially since the error message is so vague, but that's how I hit that message.