No thumbnails are generated

[zupatisc]

Hello,
recently I've run into the problem that ucollage will stop working after the first time it has been used in a session.
It will start printing out the errors shown below.

Expand caps? (n, Esc: no, N: no to all)montage: unable to open image '/tmp/ucollage/thumbnail-2vLmMsFs.jpg': No such file or directory @ error/blob.c/OpenBlob/3537.
montage:  `/tmp/ucollage/thumbnail-2vLmMsFs.jpg' @ error/montage.c/MontageImageCommand/1786.
cp: cannot stat '/tmp/ucollage/thumbnail-2vLmMsFs.jpg': No such file or directory
file: invalid option -- 'a'
Usage: file [-bcCdEhikLlNnprsSvzZ0] [--apple] [--extension] [--mime-encoding]
            [--mime-type] [-e <testname>] [-F <separator>]  [-f <namefile>]
            [-m <magicfiles>] [-P <parameter=value>] [--exclude-quiet]
            <file> ...
       file -C [-m <magicfiles>]
       file [--help]
file: invalid option -- 'a'
Usage: file [-bcCdEhikLlNnprsSvzZ0] [--apple] [--extension] [--mime-encoding]
            [--mime-type] [-e <testname>] [-F <separator>]  [-f <namefile>]
            [-m <magicfiles>] [-P <parameter=value>] [--exclude-quiet]
            <file> ...
       file -C [-m <magicfiles>]
       file [--help]
montage: unable to open image '/tmp/ucollage/thumbnail-8KA5T96e.jpg': No such file or directory @ error/blob.c/OpenBlob/3537.
montage:  `/tmp/ucollage/thumbnail-8KA5T96e.jpg' @ error/montage.c/MontageImageCommand/1786.
cp: cannot stat '/tmp/ucollage/thumbnail-8KA5T96e.jpg': No such file or directory

[ckardaris]

Hello,
Unfortunately I am unable to investigate this issue and I won't be able to for the foreseeable future.
If you are able to decide yourself what the problem is please update the conversation.
For the time being, I'm sorry for the inconvenience.

[zupatisc]

Sure I'll see if I can find out what's wrong with it.