save uv face layout causes python error

Coding Python Support
#1

i have blender 2.40
when I first start blender the console says:
Using Python version 2.4
‘import site’ failed; use -v for traceback
this first part actually comes up when I first start blender

when i try to save a uv face layout it says:
Error
python script error: check console

then the console says:
Traceback (most recent call last):
File “<string>”, line 136, in bevent
File “<string>”, line 250, in UV_Export
ValueError: math domain error

any help will be appreciated

#2

‘import site’ failed; use -v for traceback

Means that Blender cannot find your Python 2.4 install. If you have downloaded and installed Python 2.4 [ www.python.org ] then you need to set your Python Path. There is a sticky thread at the top of this forum about how to do it.

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#3

Thanks. I set my python path and now blender starts up normal whithout any errors. But I am still getting the python errors when I go to save a uv face layout.

#4

Could you please Copy and Paste the console, error message here?

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#5

Could you please Copy and Paste the console, error message here?

Using Python version 2.4
Traceback (most recent call last):
File “<string>”, line 136, in bevent
File “<string>”, line 250, in UV_Export
ValueError: math domain error

#6

I have no idea what ‘math domain error’ means. It sounds more like a problem with your installation of Python than a problem with the Math Module.

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#7

Is there anything special you have to do to get python installed properly? I just went to python website and downloaded the installer program and ran it. Then after you told me to, I set my python path. I have now tried two different versions of python: both 2.4.0.1 and also the newest one: 2.4.2
each time I made sure that the path I set was relative to the correct folder names and such. I can’t remember but I may have also tried python version 2.0. You probably already know this but the file that both errors are referring to is uv_export.py
My blender version is 2.40
Any help will be greatly apreciated!

#8

I’m using py.2.4.2 and Bl.2.40 and tested the script and it works for me. Your best bet is to PM stiv with all the details or point him to this thread.

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#9

I guess it was just a problem with my pariticular uv face layout. I tried a simpler one and the export worked. Did I mention that I’m new to Blender? Thanks for the help anyway.

#10

It is not an installation problem. A domain error means the argument to a function is out of range. For example, taking the square root of a negative number throws a domain error exception. Also, certain trig functions only produce valid output for a given input range.

Really short explanation: You are feeding bad data into a function.

#11

Thanks for that.

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