Problems with sitemap generator modules

[Bocius]

Hello,
I'm using provider's web server.
I also use 1.6 of CMS made simple with MLE
I have faced the problem using sitemap modules:
CGExtensions 1.16.2, SiteMapMadeSimple 1.1.4
and
gsgenerator10x

These always get similar error:
Warning: strpos() [function.strpos]: Empty delimiter. in /modules/SiteMapMadeSimple/SiteMapMadeSimple.module.php on line 267

Generated sitemap for the first module gives only the template of the sitemap, so there are no entries.
The sitemap for second module gives errors for sitemap (in google sitemap verification) similar to above.

In other words these does not work on my site.

Please help.

Thank You in advance.

[Bocius]

any suggestions?
Could it be because of php versions?