Compression error

I keep getting

Compression error
Error with Sitemap compression. Please recompress the file and resubmit.

I've tried running it from /vbseo_sitemap/ but still a compression error.

does your server have gzip installed on it?

Originally Posted by briansol

does your server have gzip installed on it?

No. I've had no problems til only recently. I'm also getting:

URLs not followed
When we tested a sample of the URLs from your Sitemap, we found that some URLs were not accessible to Googlebot because they contained too many redirects. Please change the URLs in your Sitemap that redirect and replace them with the destination URL (the redirect target). All valid URLs will still be submitted.

I've tried running it from /vbseo_sitemap/ but still a compression error.

Please try to modify vbseo_getsitemap.php file:
FIND:

PHP Code:

        @header('Content-Length: '.filesize(VBSEO_DAT_FOLDER . $smap)); 


add above:

PHP Code:

        @ini_set("zlib.output_compression", 0); 


No. I've had no problems til only recently. I'm also getting:

Please click on "details" to find out example URLs that are not followed.