Error in colMeans ... what's wrong with my data?

Having searched and searched I still haven't found what's the problem with my data (I've attached the relevant file).
Every time I tried to use the CANCOR-Function I got error messages.
So I turned to check my two sets of variables separately by using the "colMeans"-Function. With one set no problem .. but with the other.

My input :

struktur <- read.delim("struktur.csv", header=TRUE, sep = ";")
colMeans(struktur)

And the resulting error:

Error in colMeans(x, n, prod(dn), na.rm) : 
        `x' must be numeric


Can anyone give me a hint concerning the mistake I made?


Many thanks in advance

hardy

Hartmut Weinrebe
Wilhelmstr. 73 - 76137 Karlsruhe - 0721/386486
Akaflieg - hardy at akaflieg.uni-karlsruhe.de
Kaiserstr. 12 - 76128 Karlsruhe - 0721/608-2044
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