Sitemap Generator Forum

I installed Standalone Sitemap Generator in several of my websites in wordpress or e-commerce, has always worked perfectly, but about 10 days ago, suddenly, without touching any setting, began to fail, by the thousands of pages I had in the sitemap , I suddenly only a few hundred marks.
The strange thing is that this has happened suddenly and dalo same day in 2 different sites, one in wordpress and the other in OpenCart, so I assume that the problem does not stem from the site, as the same problem occurred in 2 sites completely different and the same day.
In addition, these sites was not at all making changes, the sitemap was generated daily in a perfect manner.

This Report Generator up to 07 May:
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Sitemap created on: 7 May 2013, 17:01
Processing time: 5:01:07s
Pages indexed: 15049
Crawled pages size: 557.51Mb
View Sitemaps
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That the Report from 08 May:
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Sitemap created on: 12 May 2013, 22:06
Processing time: 0:06:03s
Pages indexed: 77
Crawled pages size: 3.69Mb
View Sitemaps
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What could have happened?

Add that the two sites are on 2 different servers, then exclude also the problem of the server.

No one knows how to help? 

Hello,

could you please PM me your generator URL and an example URL that is not included in sitemap and how it can be reached starting from homepage?
 

my problem is identical to that described in this post:
https://www.xml-sitemaps.com/forum/index.php/topic,8283.html

But I have not done any changes to the site or server, suddenly overnight, began to capture about 10% of the pages that caught the previous days.
This has happened in my 2 sites that reside on different servers, so it can be a server problem, these 2 sites are also built with 2 cms platforms completely different.

Ok, please provide requested details in PM so that we can check.