Site migration – left not finding theme or database

Hello,

my host recently moved servers and my site went along with them. Here is the message I recieved from them in regard:

==========================================================
We’re happy to inform you that your account, including all content and
settings, has been moved to a new server cluster. The new server cluster
has new server names and IP addresses.

FTP Server Changes
==================

Web Server Names:
—————–
Old: web150.hostexcellence.com
New: web1209.hostexcellence.com

If you have the old web server name in your FTP settings, you’ll need to
change it to the new server name. We recommend making this change
immediately – this way you can test the new setting and save it for
future use.

Database Server Changes
=======================

If you use MySQL or PostgreSQL database services, please note these
server names have changed. Please see your control panel for the updated
values for these settings.

DNS Changes
===========

puriton-aikido-club.info: old=71.18.186.85 new=50.6.63.212

killerstickmancomics.com: old=71.18.186.100 new=50.6.63.213

If you’re using our name servers (listed below) your domains will be
automatically updated.

Primary: ns23.hostexcellence.com
Secondary: ns24.hostexcellence.com

If you’re using offsite name servers, please take one of the following
actions for each of your domains:

a) RECOMMENDED: Change the name servers listed for the domain to those
listed above.

b) Update your A records accordingly. You’ll need to contact the
administrator of the offsite nameserver and supply them with the content
of this message.

During the next three days, we’ll forward all requests for the old
dedicated IP addresses to the new ones. Once this time period has passed
we’ll reclaim these IP addresses for further account moves.
Unfortunately, it’s not possible to forward traffic for shared IP
domains due to there being multiple destinations.

File Changes
============

To assist with the upgrade, all references to old IP addresses and old
server names have been replaced in the content of your web site and
database(s). All files changed have a backup made, with the suffix,
“.MIGRATION_REPLACEMENT_BACKUP”.

Because we’ve made changes to your files to ensure that your site
functions on the new server, we strongly recommend that you make new
backups of your content. Restoring out-of-date backups could cause your
web site to become nonfunctional.
==============================================================

I use WordPress for the site: blog.killerstickmancomics.com.

Since the migration the load process for the front page fails to find the theme (blog header). When logging into the WordPress admin page it doesn’t display graphics/interactive buttons etc.

I understand this could be a .php issue and you can’t reasonably offer code advice, however I upgraded to the latest version of WordPress using the new web host details and don’t see any intial problems (not an expert but I have upgraded before and the instructions are easy to follow).

Also, the software I use to publish posts has this message when accessing the database:

error – with the .xmlrpc.php
405 method not allowed

Are there some things I require to change in regard to MYSQL details to WordPress? Are my file allowances restrictive?

Thank-you for your help.

– Neil