Thanks. I tested with pspad V4.5.8 (build 2462). I successfully was able to save my file (to my local dropbox folder) 2 or 3 times...only. Next attempts to save have lead to the same error while saving with V4.5.6). Note that with the V4.5.6 version I was able to "only" save my file once (the 1st time). Strange! Can it be related to the sync process of dropbox operating on the file at that time? Thanks any way...
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