Error installing theme

I have a theme that needs to get som dummy content before installing the theme.

When i install the dummy content i get this:
Its an server with php 5.3 running on IIS (win 2008R2)

Menu item skipped due to missing menu slug
Menu item skipped due to missing menu slug
Menu item skipped due to missing menu slug
Menu item skipped due to missing menu slug
Menu item skipped due to missing menu slug

when i try the 2. time i get this:
Indlæg “Hello world!” already exists.
Side “Typography” already exists.
Menu item skipped due to missing menu slug
Menu item skipped due to missing menu slug
Side “Style Shortcodes” already exists.
Menu item skipped due to missing menu slug
Side “Layout Shortcodes” already exists.
Menu item skipped due to missing menu slug
Menu item skipped due to missing menu slug
Menu item skipped due to missing menu slug
Menu item skipped due to missing menu slug
Menu item skipped due to missing menu slug
Side “Services” already exists.
Menu item skipped due to missing menu slug
Indlæg “Gallery Post #1” already exists.
Medier “big4” already exists.
Medier “big2” already exists.
Indlæg “Gallery Post #2” already exists.
Medier “big3” already exists.
Indlæg “Gallery Post #3” already exists.
Medier “4” already exists.
Medier “big8” already exists.
Indlæg “Gallery Post #4” already exists.
Medier “big1” already exists.
Indlæg “Gallery Post #5” already exists.
Medier “big7” already exists.
Indlæg “Gallery Post #6” already exists.
Medier “big6” already exists.
Indlæg “Gallery Post #7” already exists.
Side “Gallery” already exists.
Medier “big5” already exists.
Indlæg “Gallery Post #8” already exists.
Medier “big9” already exists.
Indlæg “Gallery Post #9” already exists.
Medier “big10” already exists.
Indlæg “Gallery Post #10” already exists.
Medier “big11” already exists.
Indlæg “Gallery Post #11” already exists.
Medier “big12” already exists.
Indlæg “Gallery Post #12” already exists.
Menu item skipped due to missing menu slug
Medier “yes” already exists.
Medier “no” already exists.
Side “Pricing” already exists.
Menu item skipped due to missing menu slug
Medier “1” already exists.
Indlæg “Lorem Ipsum is simply dummy text” already exists.
Indlæg “Context by Proximity” already exists.
Medier “blog1” already exists.
Indlæg “Using the Dribbble API with PHP” already exists.
Indlæg “Client Rejection – Why No Means Nothing” already exists.
Side “Blog” already exists.
Menu item skipped due to missing menu slug
Side “Contact” already exists.
Menu item skipped due to missing menu slug
Medier “help” already exists.
Indlæg “Great Support” already exists.
Medier “lock” already exists.
Indlæg “Secure Servers” already exists.
Medier “time” already exists.
Indlæg “99.9% Uptime On All Of Our Servers” already exists.
Medier “star” already exists.
Indlæg “Phenomenon a 5 Star WordPress Theme” already exists.