all import attempts return white screen (blank screen of death)

A blank page means PHP is crashing, likely due to a function conflict.

Try deactivating all plugins. If that resolves the issue, reactivate each one individually until you find the cause.

If that does not resolve the issue, try switching to the Twenty Fifteen theme to rule-out a theme-specific issue (theme functions can interfere like plugins).

I had imported for weeks. It suddenly stopped working. I have tried different themes with the same result. The frustrating part is I have the exact same plugins and themes on 5 other sites that do not have the problem. This started about 2 weeks ago. Thanks I will. I have wiped site and started over twice. First few work then suddenly it nolonger takes any XML upload.

Please try with all plugins disabled regardless, just to be sure. If it’s not them either, you’re probably hitting PHP’s memory limit.

Here are three ways to increase PHP’s memory allocation:

1. If you can edit or override the system php.ini file, increase the memory limit. For example, memory_limit = 128M

2. If you cannot edit or override the system php.ini file, add php_value memory_limit 128M to your .htaccess file.

3. If neither of these work, it’s time to ask your hosting provider to temporarily increase PHP’s memory allocation on your account. Keep in mind that most decent hosting providers allocate 32 MB to PHP under each account, and most decent hosting providers allow users to temporarily increase the memory allocation. If your hosting provider won’t accommodate you, perhaps it’s time to find a new hosting provider.

(in the above examples, the limit is set to 128MB)

Upgradeing to 4.4 and aprox 33 plugins resolved it

Thanks for letting us know your solution!