Unfortunately there was a power failure at a datacenter with some of the servers that host our data. This happened at the same time we were upgrading some of our database servers and caused several issues.
For more info see:
We are working as fast as possible to restore full functionality, but in the meantime some synths and content may be un-viewable.
Previously existing synths are not lost and should be back soon.
Unfortunately, synths that were actively uploading while the site was having issues yesterday may need to be synthed and uploaded again.
You should be able to upload and view new synths without any problems.
Thanks for your patience. We will update with more information when possible.