lossage (/los'əj/ n.)

[very common] The result of a bug or malfunction. This is a mass or collective noun.

What a loss!

and

What lossage!

are nearly synonymous. The former is slightly more particular to the speaker's present circumstances; the latter implies a continuing lose of which the speaker is currently a victim. Thus (for example) a temporary hardware failure is a loss, but bugs in an important tool (like a compiler) are serious lossage.