Lost access file to external volume

After a recent cleanup (which obviously was a little too "thorough") I tried to mount my Time Capsule (which is partitioned for both Time Machine and manual backup), and received this message:
This Data file is just an alias and the original cannot be found. Even so, I can still access Time Machine so it seems that it is only this access file (or whatever you call it) that´s lost.
Now, since I´m not a Mac expert I can´t figure out how to go back and fix this; as external volumes are not backed up by Time Machine I don´t really have a backup. I could try to reset the entire hard drive to a week ago, but would really like to avoid that, as I´ve done a lot of work since then.
I believe what happened was that I used MacKeeper´s function "Disk usage" and revealed that the folder "Volumes" spent a whole lot of disk space on my MBP. Being completely braindead at the time, I figured that this had nothing to do with what was actually stored on the external drive (as that shouldn´t take up space on the MBP), and so I deleted the folder "Data" through MacKeeper. As that file went missing I´m now denied access to my manual backup on the TC, and appreciate any advise. Thanks

Hi;
please see below:
ORA-28576 When Executing External Procedure [ID 295721.1]
ORA-28576 Using External Procedures [ID 113179.1]
External Procedure Fails With ORA-28576 [ID 468404.1]
Also see:
Problem calling dll using extproc
Regard
Helios

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