iCloud problem

I use microsoft office excel 2007. When I save a file located in the icloud, the file (often) turns into this

the problem, for example, is that excel does not see this file (I'm trying to open it from excel)

when I try to open the file manually, it says:

The actual format of the file you are trying to open (26068000) is different from the file extension indicated. Before opening this file, make sure it is not corrupted and comes from a trusted source. Do you want to open this file now?

icloud' developers, please fix it, thx.

iCloud problem
 
 
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