I upgraded from version 538 to the new version 539 wihtout problems
I removed the currently used SD-Card from Ebooster and deleted all content of the SD-Card
Running the automated cache configuration I get the suggestio to use my system ram with 512 of 2GB RAM what seems OK
During creation of the cache-file it already shows that it was building a cache file on drive D: (2nd partition of one physically HDD in my computer) and allocated 341 MB to Ebooster which is filled 100%
Ebooster also assigned 3788MB of the 4GB SD-Card and filled it up to 28%
Nw the Ebooster Control Panel shows me the SD-Card as device and also the harddrive D: - the icon for the harddrive has also a yellow exclamation mark on it but shows status active, 341MB but no speed.
On the menu Edit > Add new cache device the option "System Memory" is active which has also the "system-memory-icon/sd-ram-picture", hidden system memory is not activated and the location of the file is the harddrive D: with 341MB Ram.
The system cache drive slider next to the MB value shows 1811 of 2047MB total - thats looks like it uses SD-Ram memory for Ebooster.
Checking drive D: I have now a hidden Ebooster-folder and a cache file of 341MB.
I am aware that a SD-Ram cache file is stored on the harddrive of course but until now/former versions of Ebooster the "system memory" is shown in the Ebooster Control panel with the "system memory icon" and also named "System Memory". Now it is named "<partition name> Hard Disc (Active)" and has a HDD symbol (including a yellow exclamation mark).
Only on the add new cache device menu the system memory is shown witht the correct icon.
At least my Ebooster systray icon is not always jumping up and down like before when allocation system memory to Ebooster.
BTW: using WinXPsp3professional on AthlonXP3200 with 2GB SD-Ram and a IDE133-HDD