SSAS loses connection to local workspace

I seem to be running into this quite regularly these days. I'm editing an SSAS tabular model, filtering data in the views in VS 2012 to verify that calculations are working, and I get this:
The result is that any work you've done since you last saved is lost, because you won't be able to save. It's really getting quite frustrating.
I did find a post online that went over how you could recover your work from your local workspace SSAS install by reverse engineering/scripting the cube out of it, but that's really not an option in my case since I'm using source control and can't dump my
project history every time this happens (and it happens multiple times a day now).
Does anyone know of a workaround for this issue before I open a support incident? Thanks.
Edit: Seems that screenshots don't get persisted to the messages in MSDN forums anymore. Here's the text of what would have been in the screenshot:
"cannot complete the operation because there is no connection to the workspace database that contains the model currently being edited"
Specific steps to re-create. Filter any column in the tabular designer, and when you go to clear the filter if you hit clear before the list of available values populates in the box below, it'll lose connection to the workspace server, and everything will
be lost. Any attempt to save will result in:
"Unable to save the file Model.bim. Reason: The file cannot be saved because it is marked as readonly"
Some posted elsewhere about getting past this issue by un-setting the Model.bim file as read-only, or unsetting the entire project directory and it's contents as read-only,  but that has not worked on any workstation I have ran into this problem with.
I suspect this is only one of several ways to cause the issue - I know about this one, I try and avoid it, and I still run into problems occasionally.

Hi K Dahl,
According to your decsription, you can't save the bim file and it throw the above error. Right?
In Analysis Services Tabular mode, this error occurs if the tabular designer has lost the connection to the workspace database server at some point during the editing session. However, there is a way to recover the work you did since the last save of the
model. Please refer to a blog below:
Recovering your model when you can’t save the BIM file
If you have any question, please feel free to ask.
Best Regards,
Simon Hou
TechNet Community Support

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    ls /var/mysql ->
    MyServer.local.err
    ib_logfile1
    mysql
    ib_logfile0
    ibdata1
    test
    Can't find my.cnf or my.ini anywhere
    Can't find mysql.sock anywhere
    I'm trying to get a bug database running (mantis) under Mac OS X Server 10.4.4 that I can access from local clients.
    I'm trying to follow directions at http://www.mantisbugtracker.com/manual/manual.installation.php
    without knowing anything about mysql or php and I'm stuck on step 3:
    "Next we will create the necessary database tables and a basic configuration
    file."
    I get a message saying
    "Does administrative user have access to the database? ( Lost connection to MySQL server during query )"
    I don't even know if following the mantis directions has resulted in the creation of a database or not. Where would it be?
    Thanks for any help.
    Intel iMac   Mac OS X (10.4.10)  

    I've just done a clean install of OSX Server and added the latest MYSQL packaged installer. Afterwards I found the lock file in /private/tmp/mysql.lock
    The easiest way to solve this problem is to create a symbolic link so that the lock file appears to be in right place.
    e.g.
    cd /var
    sudo mkdir mysql <== this assumes the directory is missing
    cd mysql
    sudo ln -s /private/tmp/mysql.sock mysql.sock
    After this msql commands should work fine, and you've not fiddled with the security settings on users/groups.
    HTH
    Christian

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