I Know, Sudomemo Is Low On Donations And Sudofox Has To Shut It Down For Sometime Until He Gets Enough Money,
Here's What The Message Says:
"Hello, Sudomemo Community.
As Many As You Probably Know, Sudomemo Is a Fan-Made Service That Is Not Financially By Hatena Co., Ltd. or Nintendo. Because Of This, As A Community We All Rely On The Generous Donations Of Our Members.

Sudomemo Costs an average of $190 each month - that's around $2, 300 a year - to keep running. We're very fortunate that we usually get enough from donations to cover each month's fees, although any remainder of the bill has to be paid by Austin (aka "Sudofox"), the creator of sudomemo.

We Hate To Do This , but this month we haven't received enough donations, which is why you are reading this notice. In order for the normal sudomemo site to return, we need to recover $120 in donations -- enough to pay for this month's round of fees.

If you love Sudomemo [...]

Now Please don't panic! All of your flipnotes and other data is still there!
You Can Donate by visiting:" Blah Blah Blah :v

Si Quieres Que Te Lo Tradusca A español Dime :3

Im getting the exact same error code, its takin over my dsi more than ever now!

The same thing happened to me and the only way to get rid of it is to delete flipnote studio, redownload it, and start over. if u found another solution, go ahead and call me wrong