Error message, trying to generate first plot in Circos

[Erik Burchard]

I'm getting the following error when I attempt to plot my assembly using Circos:

debuggroup summary 0.42s welcome to circos v0.69 6 Dec 2015 on Perl 5.022001

debuggroup summary 0.43s current working directory /home/erik/Desktop/circos-0.69-9/etc

debuggroup summary 0.43s command /usr/bin/circos [no flags]

debuggroup summary 0.43s guessing configuration file

debuggroup summary 0.43s found conf file /home/erik/Desktop/circos-0.69-9/etc/circos.conf

debuggroup summary 1.05s debug will appear for these features: output,summary

debuggroup summary 1.05s bitmap output image ./circos.png

debuggroup summary 1.05s SVG output image ./circos.svg

debuggroup summary 1.05s parsing karyotype and organizing ideograms

debuggroup summary 1.06s karyotype has 26 chromosomes of total size 31,788,928

debuggroup summary 1.08s applying global and local scaling

Use of uninitialized value $norm[0] in join or string at /usr/share/perl5/Circos/Unit.pm line 196, <F> line 26.

The 'from' parameter (undef) to Circos::Unit::unit_convert was an 'undef', which is not one of the allowed types: scalar

 at /usr/share/perl5/Circos/Unit.pm line 203, <F> line 26.

Circos::Unit::unit_convert("from", undef, "to", "b", "factors", HASH(0x4d58a30)) called at /usr/share/perl/5.22/Memoize.pm line 245

Memoize::_memoizer(CODE(0x43647e8), "from", undef, "to", "b", "factors", HASH(0x4d58a30)) called at (eval 84) line 1

Memoize::__ANON__("from", undef, "to", "b", "factors", HASH(0x4d58a30)) called at /usr/share/perl5/Circos.pm line 5578

Circos::ideogram_spacing(HASH(0x4d40370), HASH(0x4d404f0), 0) called at /usr/share/perl5/Circos.pm line 538

Circos::run("Circos", "_argv", "", "_cwd", "/home/erik/Desktop/circos-0.69-9/etc") called at /usr/bin/circos line 385

Can someone please tell me what is going wrong here?  Thanks very much!!

Erik