I am putting a site on a not familiar server. I can upload images, clear cache, automated jobs do run, I am able to access dashboard and create new pages.

I can "add" blocks to a page but, when I try to save an edited content block or html block, I get the following error:

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Empty Sitewide Header Site Title Area Edit Block Copy to Clipboard Delete Design & Custom Template Advanced AzureVantage Hosting Empty Sitewide Header Site Title Area Sitewide Header Site Title Add Block Edit Area Design
Empty Sitewide Header Navigation Area Edit Block Copy to Clipboard Delete Design & Custom Template Advanced Empty Sitewide Header Navigation Area Sitewide Header Navigation Add Block Edit Area Design
Empty Sitewide Header Search Area Edit Block Copy to Clipboard Delete Design & Custom Template Advanced search Empty Sitewide Header Search Area Sitewide Header Search Add Block Edit Area Design
Empty Sitewide Global Navigation Area Edit Block Copy to Clipboard Delete Design & Custom Template Advanced HomeAbout Empty Sitewide Global Navigation Area Sitewide Global Navigation Add Block Edit Area Design
Empty Page Header Area Page

Can add a feature block as long as I do not select an icon...actually the second feature block allowed an image but I got the same error when I added text.

I get the error regardless of the theme.

Nav blocks seem to work.

Running 5.7.5.8
PHP 5.6
PHP Modules: CURL, zip, mcrypt, openssl, GD (with freetype), mysql, mbstring, iconv  
PHP settings post_max_upload_filesize = 64, post_max_size = 64, php memory limit to 256
PHP Safe Mode Off 
MySQL 5.1.5
MySQL Innodb table support. 
Apache

azurevantage.net

Any suggestions?