Hi Sylvia,
thanks for your interest in my plugin. With the new version (0.9.14) you have some error handling options at hand. You can create a dedicated error template which will be used if there is an error in parsing a product (e.g. if it is not available any more). Furthermore AmazonSimpleAdmin can create log entries in case of errors and even inform you via email about such issues.
I hope this is what you were looking for.